Filter Stories - Coffee Documentaries

James Harper

Coffee stories with an extra shot of history and science. Filter Stories is a podcast revealing coffee’s hidden microscopic secrets, its powerful past, and how your choice of beans impacts tens of millions of people.

See the behind-the-scenes stories on Instagram @filterstoriespodcast.

If you haven’t already, please subscribe to the show and review us on Apple Podcasts and Spotify!

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81 episodes
Updated July 27

Episodes81

Newest first

Mar 24, 2025 · 52 min
Science: How to roast more coffee, faster!
To roast coffee faster, you need to turn up the heat….right? No! In this episode, we explore the three powerful methods of heat transfer that revolutionised roasting. We’ll journey from humble beginnings—when roasting three kilos took half an hour—to machines that now roast hundreds of kilos of coffee in the time it takes you to boil a kettle. But beans roasted at lightning speed look strange, and taste… well, you’ll find out. Join us as we test-drive an industrial tangential roaster where first crack remind me of fireworks crackers. We also see the whale-sized roaster so massive it’s worth you a Guinness World Record. We have the technology today to roast coffee faster than ever, so why aren’t we all roasting at recording-breaking speeds? --------------- Please spread the word about The Science of Coffee! Leave a 5 star rating on Spotify Follow me on Instagram and tag me in an Instagram story Write a review on Apple Podcasts Discover how I make these Filter Stories episodes by subscribing to my Substack newsletter Check out the Probat roasters mentioned in this episode: Emmerich Spherical Roaster - "Pink Hydrant" Large ball roaster - “Sputnik in a pizza oven” G45 early drum roaster - “Old school steam train” Early tangential roaster Sample tangential roaster - "Shoebox" Neptune 4000, the largest drum roaster in the world! - "The whale" And there are lots of other specialty roasters from Probat I didn't have time to showcase, including their new hydrogen powered roasters. See them all for yourself!. Theodor von Gimborn's wikipedia page Go deeper into the science of roasting Read Mark Al-Shemmeri’s coffee roasting blog Do a Certificate of Advanced Studies with the Coffee Excellence Centre Explore Barista Hustle's online roasting learning Learn more from Morten Münchow and his coffee roasting courses Read Morten’s paper in collaboration with the University of Copenhagen on Roasting Conditions and Coffee Flavour Follow Filter Stories on Instagram for my infographics Learn more about first crack on my episode Coffee Roasting, Part 1: How heat transforms coffee beans Season 3 is made possible by these leading coffee organizations: The Coffee Quest | BWT | TODDY | Algrano | Probat Check out Standart, the award-winning coffee magazine. Get a free magazine and a free bag of coffee by clicking here. Use ProfilePrint to find the coffee your customers loved last year (without a week of cupping!). Use promo code "FILTER" to get 10% off your first year of a Mini Beluga subscription. Click here to discover ProfilePrint's many uses. Support hundreds of thousands of coffee farmers with Fairtrade. Discover how here. Office coffee = easy recurring revenue. WMF’s Elevation 10 and Peak 50 do the work for you. Learn more here. What kind of racing car does the Gaggia Classic GT home espresso machine remind you of? Use discount code FS202610 to get 10% off.
Mar 10, 2025 · 47 min
Science: The chemistry of coffee roasting
A mother coffee plant gifts its baby everything it needs to grow—a green seed packed with food. But when we roast coffee, we hijack that gift and turn it into something else: flavor. But what is flavor, at a microscopic level? What actually happens inside the bean when heat meets those nutrients? In this episode, we shrink down to witness the Maillard reaction up close—a wild chain of molecular collisions that transforms baby plant food into aromas we adore. Grab your popcorn - you’re getting a front row seat at the wildest chemistry show in coffee. --------------- Please spread the word about The Science of Coffee! Leave a 5 star rating on Spotify Follow me on Instagram and tag me in an Instagram story Write a review on Apple Podcasts Discover how I make these Filter Stories episodes by subscribing to my Substack newsletter Ethiopian forest sounds curtesy of George Vlad. Hear more nature sounds here. Explore Probat's roasters Go deeper into the science of roasting Do a Certificate of Advanced Studies with the Coffee Excellence Centre Grab a copy of Anja Rahn's upcoming book on coffee science through her Instagram Explore Barista Hustle's online roasting learning Learn more from Morten Münchow and his coffee roasting courses Read Morten’s paper in collaboration with the University of Copenhagen on Roasting Conditions and Coffee Flavour Follow Sebastian Opitz on LinkedIn Follow Filter Stories on Instagram for my infographics Season 3 is made possible by these leading coffee organizations: The Coffee Quest | BWT | TODDY | Algrano | Probat Check out Standart, the award-winning coffee magazine. Get a free magazine and a free bag of coffee by clicking here. Use ProfilePrint to find the coffee your customers loved last year (without a week of cupping!). Use promo code "FILTER" to get 10% off your first year of a Mini Beluga subscription. Click here to discover ProfilePrint's many uses. Support hundreds of thousands of coffee farmers with Fairtrade. Discover how here. Office coffee = easy recurring revenue. WMF’s Elevation 10 and Peak 50 do the work for you. Learn more here. What kind of racing car does the Gaggia Classic GT home espresso machine remind you of? Use discount code FS202610 to get 10% off.
Feb 16, 2025 · 46 min
Science: Fruit juice or creamy almonds? Your guide to controlling cold brew flavors
When I started making cold brew this last year, I treated it like hot brew filter coffee. But no matter how I adjusted the grind or tweaked the brew time, I hardly got any differences in flavor… Then it hit me: cold brew isn’t just a slower hot brew—it’s a completely different game with its own rules! In this episode, I speak with leading coffee researchers who break down the microscopic dance between water and coffee that explains why cold brew plays by its own playbook. And I bring you in on the brewing secret that can turn your brews from fruit juice to nutty creaminess. --------------- Please spread the word about The Science of Coffee! Leave a 5 star rating on Spotify Follow me on Instagram and tag me in an Instagram story Write a review on Apple Podcasts Discover how I make these Filter Stories episodes by subscribing to my Substack newsletter Explore TODDY’s cold brewing kits Go deeper into the science of cold brew Do a Certificate of Advanced Studies with the Coffee Excellence Centre Read Jiaxin (Jessie) Liang’s equilibrium extraction SCA 25 article and her published article Discover all of UC Davis' cold brew research through the Coffee Science Foundation Learn how to do a cold brew cupping with Toddy Follow Filter Stories on Instagram for my infographics Season 3 is made possible by these leading coffee organizations: The Coffee Quest | BWT | TODDY | Algrano | Probat Check out Standart, the award-winning coffee magazine. Get a free magazine and a free bag of coffee by clicking here. Use ProfilePrint to find the coffee your customers loved last year (without a week of cupping!). Use promo code "FILTER" to get 10% off your first year of a Mini Beluga subscription. Click here to discover ProfilePrint's many uses. Support hundreds of thousands of coffee farmers with Fairtrade. Discover how here. Office coffee = easy recurring revenue. WMF’s Elevation 10 and Peak 50 do the work for you. Learn more here. What kind of racing car does the Gaggia Classic GT home espresso machine remind you of? Use discount code FS202610 to get 10% off.
Feb 3, 2025 · 45 min
Science: Hot vs Cold - The science behind temperature and taste
For years, I used cold brew as a last resort—the only brew method to tame dark, oily beans that were too bitter for hot water. Then one day, I took a chance on a Guatemalan Gesha and brewed it cold. The result? A massive explosion of florals I’d never tasted before. That single cup sent opened my eyes into how extraordinary cold brew can be. In this episode, I speak with world-leading coffee scientists who explain why brewing with cold water tastes so different from chilled hot coffee. You’ll learn how certain flavors leap into your cup (and how others mysteriously vanish) when you lower the brew temperature. You’ll also discover there are hidden “cold brew gems” in beans you thought you knew. So before you grab the kettle, consider this: sometimes all you need is cold water. --------------- Please spread the word about The Science of Coffee! Leave a 5 star rating on Spotify Follow me on Instagram and tag me in an Instagram story Write a review on Apple Podcasts Discover how I make these Filter Stories episodes by subscribing to my Substack newsletter Explore TODDY’s cold brewing kits Go deeper into the science of cold brew Do a Certificate of Advanced Studies with the Coffee Excellence Centre Listen to my episode on Coffee Extraction for insights into how polarity affects flavor extraction Read the UC Davis cold brew vs chilled hot brew study Listen to my episode on 'How to think like a scientist' Learn how to do a cold brew cupping with Toddy Follow Filter Stories on Instagram for my acidity infographic Go deeper into Paul Breslin's work at the Monell Chemical Senses Centre Discover all of UC Davis' cold brew research through the Coffee Science Foundation Season 3 is made possible by these leading coffee organizations: The Coffee Quest | BWT | TODDY | Algrano | Probat Check out Standart, the award-winning coffee magazine. Get a free magazine and a free bag of coffee by clicking here. Use ProfilePrint to find the coffee your customers loved last year (without a week of cupping!). Use promo code "FILTER" to get 10% off your first year of a Mini Beluga subscription. Click here to discover ProfilePrint's many uses. Support hundreds of thousands of coffee farmers with Fairtrade. Discover how here. Office coffee = easy recurring revenue. WMF’s Elevation 10 and Peak 50 do the work for you. Learn more here. What kind of racing car does the Gaggia Classic GT home espresso machine remind you of? Use discount code FS202610 to get 10% off.
Jan 27, 2025 · 2 min
Introducing: Season 3 of The Science of Coffee
We’re back with another series of The Science of Coffee—and this time we’re diving even deeper into coffee’s hidden microscopic secrets! Over the past year, narrative audio producer and coffee professional James Harper has scoured academic journals, ventured deep into coffee farms, and conducted bold tasting experiments. Now, he’s weaving those discoveries into captivating audio stories that reveal why coffee tastes the way it does—and how we can make it taste even better. In this new series, you’ll learn about cold brew extraction science, explore innovations in roasting, and follow the shifting business models that shape farmers’ livelihoods. You’ll also take a journey through commodity vs. specialty supply chains and examine the historical, sociological, and philosophical perspectives that define what “specialty coffee” truly means. Press the “Subscribe” button so you don’t miss an episode! https://bit.ly/3TdDnHO For more coffee science and behind-the-scenes content, follow James on Instagram @filterstoriespodcast. https://bit.ly/2Mlkk0O The Science of Coffee is a spin-off series from James Harper’s documentary podcast, Filter Stories. https://bit.ly/3ajoT5e Season 3 is made possible by these leading coffee organizations: The Coffee Quest | BWT | TODDY | Algrano | Probat Check out Standart, the award-winning coffee magazine. Get a free magazine and a free bag of coffee by clicking here. Use ProfilePrint to find the coffee your customers loved last year (without a week of cupping!). Use promo code "FILTER" to get 10% off your first year of a Mini Beluga subscription. Click here to discover ProfilePrint's many uses. Support hundreds of thousands of coffee farmers with Fairtrade. Discover how here. Office coffee = easy recurring revenue. WMF’s Elevation 10 and Peak 50 do the work for you. Learn more here. What kind of racing car does the Gaggia Classic GT home espresso machine remind you of? Use discount code FS202610 to get 10% off.
May 6, 2024 · 47 min
Science: How grinders work deep inside
Deep inside your coffee grinder, tiny changes can have massive consequences. This episode takes you deep inside Mahlkönig’s grinders to show you how coffee is ground and the importance of particle sizes on flavour. If you’re a home coffee lover, you could easily spend thousands of dollars on your coffee grinder. But after diving deep into the R&D of grinder manufacturing, I learned that after a certain point spending more probably won’t produce a better tasting cup of coffee for you! --------- Please spread the word about The Science of Coffee! Discover how I make these Filter Stories episodes by subscribing to my Substack newsletter. Write a review on Apple Podcasts Follow me on Instagram and tag me in an Instagram story Leave a 5 star rating on Spotify Explore Mahlkönig’s range of world leading grinders, trusted by baristas globally. Go deeper into the world of grinding Take Barista Hustle’s Advanced Espresso course Learn from Lance Hedrick where the sweet spot is for buying a coffee grinder Get super nerdy with Jonathan Gagne’s writings on grinding Read up on Samo Smrke’s work on coffee fines Connect with my very knowledgeable guests Arnaldo Rodrigues - LinkedIn Luca Lange - LinkedIn Chris Meier - LinkedIn Dario Burger - Instagram The Science of Coffee is made possible by these leading coffee organisations: BWT Water and More Marco Beverage Systems ROEST Sustainable Harvest Mahlkönig The Science of Coffee is a spin-off series from James Harper's documentary podcast Filter Stories Check out Standart, the award-winning coffee magazine. Get a free magazine and a free bag of coffee by clicking here. Use ProfilePrint to find the coffee your customers loved last year (without a week of cupping!). Use promo code "FILTER" to get 10% off your first year of a Mini Beluga subscription. Click here to discover ProfilePrint's many uses. Support hundreds of thousands of coffee farmers with Fairtrade. Discover how here. Office coffee = easy recurring revenue. WMF’s Elevation 10 and Peak 50 do the work for you. Learn more here. What kind of racing car does the Gaggia Classic GT home espresso machine remind you of? Use discount code FS202610 to get 10% off.
Apr 22, 2024 · 49 min
Science: Protecting your coffee’s flavours
For your coffee to taste its best, it’s crucial you buy fresh roasts and grind fresh.… .….Or maybe not. When I began creating this episode, I was convinced that ‘fresh is best’. But, after delving into the science of coffee freshness, I don’t believe that anymore. This episode goes deep into how diffusion and oxidation changes a coffee’s flavours. You’ll learn what it takes to store your coffee grounds unbelievably well. So well, that if you do it right, you will struggle to taste the difference between two month old coffee compared to those same beans freshly ground! But here’s the weirdest thing: Maybe, just maybe, you will prefer old coffee more than the fresh stuff. ---------- Please spread the word about The Science of Coffee! Discover how I make these Filter Stories episodes by subscribing to my Substack newsletter. Leave a 5 star rating on Spotify Follow me on Instagram and tag me in an Instagram story Write a review on Apple Podcasts Explore Mahlkönig’s range of world leading grinders, trusted by baristas globally. Dive deeper into the science of coffee freshness Do a Certificate of Advanced Studies with the Coffee Excellence Centre Pick up a copy of the SCA’s Coffee Freshness Handbook Connect with my very knowledgeable guests Samo Smrke - Instagram 19 Grams Coffee Roasters in Berlin - Instagram Arnaldo Rodrigues - LinkedIn The Science of Coffee is made possible by these leading coffee organisations: BWT Water and More Marco Beverage Systems ROEST Sustainable Harvest Mahlkönig The Science of Coffee is a spin-off series from James Harper's documentary podcast Filter Stories Check out Standart, the award-winning coffee magazine. Get a free magazine and a free bag of coffee by clicking here. Use ProfilePrint to find the coffee your customers loved last year (without a week of cupping!). Use promo code "FILTER" to get 10% off your first year of a Mini Beluga subscription. Click here to discover ProfilePrint's many uses. Support hundreds of thousands of coffee farmers with Fairtrade. Discover how here. Office coffee = easy recurring revenue. WMF’s Elevation 10 and Peak 50 do the work for you. Learn more here. What kind of racing car does the Gaggia Classic GT home espresso machine remind you of? Use discount code FS202610 to get 10% off.
Apr 8, 2024 · 55 min
Science: How to think like a scientist
In the last episode, I discovered that rinsing my Chemex filter papers was a waste of time! As a result I’ve managed to claw back over seven days of my life left on earth. But why stop there? The coffee industry is full of elaborate ways of brewing and savouring coffee: fancy drippers, cold metal balls, “slurp-able” cupping spoons. These are very fun, but how many of them actually affect the flavour of our coffee? I fear elaborate coffee gear is wasting our time and money. They're distracting us from the existential crises in coffee that actually require all our attention now. For example, the issue of farmers who grow delicious coffees quitting the business because it’s just getting too hard. But to figure out whether a popular new coffee tool was actually waste of time or not, I needed to think like a scientist. This episode is the journey I went on to rewire my brain: I had to learn what good evidence looks like, what to do if I can’t find good evidence, and why it’s important to focus mostly on experimental results while resisting the allure of a compelling theory. Please spread the word about The Science of Coffee! Discover how I make these Filter Stories episodes by subscribing to my Substack newsletter. Leave a 5 star rating on Spotify Follow me on Instagram and tag me in an Instagram story Write a review on Apple Podcasts Discover this episode’s sponsor BWT’s water filtration products. I use their Penguin magnesium filter cartridges and cafes can use their BestAqua ROC Dive deeper into the science of slurping, water and Signal Detection Theory Do a Certificate of Advanced Studies with the Coffee Excellence Centre Read Georgiana’s paper on soup slurping Learn more about Signal Detection Theory Explore BWT White Paper on the effects of magnesium (German) Browse Christopher Hendon’s book Water for Coffee Take Barista Hustle's Water course Watch James Hoffman's water video Connect with my very knowledgeable guests Morten Munchow - Coffee Mind website Jeremy Nelson - LinkedIn Samo Smrke - Instagram Georgiana Juravle - Google Scholar Young Baek - Instagram Frank Neuhausen - LinkedIn Sergio Barbarisi - LinkedIn Alessandro Genovese - LinkedIn The Science of Coffee is made possible by these leading coffee organisations: BWT Water and More Marco Beverage Systems ROEST Sustainable Harvest Mahlkönig The Science of Coffee is a spin-off series from James Harper's documentary podcast Filter Stories Check out Standart, the award-winning coffee magazine. Get a free magazine and a free bag of coffee by clicking here. Use ProfilePrint to find the coffee your customers loved last year (without a week of cupping!). Use promo code "FILTER" to get 10% off your first year of a Mini Beluga subscription. Click here to discover ProfilePrint's many uses. Support hundreds of thousands of coffee farmers with Fairtrade. Discover how here. Office coffee = easy recurring revenue. WMF’s Elevation 10 and Peak 50 do the work for you. Learn more here. What kind of racing car does the Gaggia Classic GT home espresso machine remind you of? Use discount code FS202610 to get 10% off.
Mar 25, 2024 · 46 min
Science: How to brew coffee like a scientist
Should you rinse your filter paper before making a filter coffee? Almost everybody in coffee internet says you should. But what if most of coffee internet was wrong? In this episode, I show you how I try to answer this question like a professional sensory scientist would. It’s hard. It’s frustrating. But ultimately, it’s worth it because I end up saving seven days of my life left on earth! Please spread the word about The Science of Coffee! Discover how I make these Filter Stories episodes by subscribing to my Substack newsletter Leave a 5 star rating on Spotify Follow me on Instagram and tag me in an Instagram story Write a review on Apple Podcasts Bring out vibrancy in your coffee with BWT’s magnesium water filters for the home and cafe Dive deeper into sensory science methodologies Take Becky Bleibaum's free introductory sensory science course! Set up a triangulation yourself with DragonflySci’s worksheets Understand Rose Marie Pangborn’s three step process better with Morten Münchow (“Pangborn’s Razor”) Do a Certificate of Advanced Studies with the Coffee Excellence Centre Connect with my very knowledgeable guests Morten Munchow - Coffee Mind website Becky Bleibaum - LinkedIn Samo Smrke - Instagram Sophie Vo - LinkedIn The Science of Coffee is made possible by these leading coffee organisations: BWT Water and More Marco Beverage Systems ROEST Sustainable Harvest Mahlkönig The Science of Coffee is a spin-off series from James Harper's documentary podcast Filter Stories Check out Standart, the award-winning coffee magazine. Get a free magazine and a free bag of coffee by clicking here. Use ProfilePrint to find the coffee your customers loved last year (without a week of cupping!). Use promo code "FILTER" to get 10% off your first year of a Mini Beluga subscription. Click here to discover ProfilePrint's many uses. Support hundreds of thousands of coffee farmers with Fairtrade. Discover how here. Office coffee = easy recurring revenue. WMF’s Elevation 10 and Peak 50 do the work for you. Learn more here. What kind of racing car does the Gaggia Classic GT home espresso machine remind you of? Use discount code FS202610 to get 10% off.
Mar 13, 2024 · 41 min
Science: Why don’t we see more organic coffee farms?
Farming coffee organically is amazing because soils are more alive, birds and insects are more plentiful, farmers avoid getting sick with agrochemicals. But, if it’s so great, why is less than 10% of the world’s coffee grown organically? The fact is, going organic is hard. Much harder than growing coffee conventionally. In this episode I show you the story of one of Central America’s most successful organic coffee cooperatives, RAOS, and the four big hurdles that stood in the way of their early founders who all dreamed of converting their farms to organic. This story changed my understanding of farming and is now the reason I choose organic specialty coffee whenever I can. Please spread the word about The Science of Coffee! Discover how I make these Filter Stories episodes by subscribing to my Substack newsletter Follow me on Instagram and tag me in an Instagram story Write a review on Apple Podcasts Leave a 5 star rating on Spotify Dive deeper into organic coffee Learn more about Sustainable Harvest’s Most Valuable Producer programme, their cupping app Tastify, and explore their range of certified organic and Fairtrade coffees Explore RAOS (Cooperativa Regional Mixta de Agricultores Organicos de la Sierra)'s story for yourself Are you a coffee farmer? Get in touch with Lalo Perez Varaona Connect with my very knowledgeable guests Lalo Perez Varaona - LinkedIn Jorge Cuevas - LinkedIn Andrea Futterer - GEPA website Osman Contreras - LinkedIn Roberto Rene Gonzales - Farm website The Science of Coffee is made possible by these leading coffee organisations BWT Water and More Marco Beverage Systems ROEST Sustainable Harvest Mahlkönig The Science of Coffee is a spin-off series from James Harper's documentary podcast Filter Stories Check out Standart, the award-winning coffee magazine. Get a free magazine and a free bag of coffee by clicking here. Use ProfilePrint to find the coffee your customers loved last year (without a week of cupping!). Use promo code "FILTER" to get 10% off your first year of a Mini Beluga subscription. Click here to discover ProfilePrint's many uses. Support hundreds of thousands of coffee farmers with Fairtrade. Discover how here. Office coffee = easy recurring revenue. WMF’s Elevation 10 and Peak 50 do the work for you. Learn more here. What kind of racing car does the Gaggia Classic GT home espresso machine remind you of? Use discount code FS202610 to get 10% off.
Feb 26, 2024 · 38 min
Science: The magic of soil
The world’s farming soils are deteriorating quickly. Conventional coffee farming where plants are grown using agrochemicals allowed farmers to reap huge harvests these last 70 years. But these agrochemicals have been at the expense of soil health. I travel to Honduras to explore a potential solution: organic coffee farming. Come with me as I show you the organic farming tricks of Don Rufino, one of the region’s leading organic farmers. He nurtures the soil around his coffee trees using mountain microorganisms, a huge diversity of shade trees, attentive tree pruning, and very funky batches of homemade bug spray. The results speak for themselves: when I pick up a handful of his soil, it is moist, dense and writhing with life. Could these cultivation techniques be the answer to the coffee world’s declining soil health? Please spread the word about The Science of Coffee! Discover how I make these Filter Stories episodes by subscribing to my Substack newsletter! Follow me on Instagram and tag me in an Instagram story Write a review on Apple Podcasts Leave a 5 star rating on Spotify Dive deeper into organic coffee Explore Sustainable Harvest’s range of certified organic and Fairtrade coffees Are you a coffee farmer? Get in touch with Lalo Perez Varaona Check out Don Rufino’s organic cooperative, RAOS Connect with my very knowledgeable guests Lalo Perez Varaona - LinkedIn Tommie Hooft van Huysduynen - LinkedIn Alison Streaker - LinkedIn The Science of Coffee is made possible by these leading coffee organisations BWT Water and More Marco Beverage Systems ROEST Sustainable Harvest Mahlkönig The Science of Coffee is a spin-off series from James Harper's documentary podcast Filter Stories Check out Standart, the award-winning coffee magazine. Get a free magazine and a free bag of coffee by clicking here. Use ProfilePrint to find the coffee your customers loved last year (without a week of cupping!). Use promo code "FILTER" to get 10% off your first year of a Mini Beluga subscription. Click here to discover ProfilePrint's many uses. Support hundreds of thousands of coffee farmers with Fairtrade. Discover how here. Office coffee = easy recurring revenue. WMF’s Elevation 10 and Peak 50 do the work for you. Learn more here. What kind of racing car does the Gaggia Classic GT home espresso machine remind you of? Use discount code FS202610 to get 10% off.
Feb 12, 2024 · 46 min
Science: Roasting made easy
Roasting coffee can be maddening. Just 4° Celsius is enough to make the same green beans taste distinctly different! And there are so many things roasters can play around with: temperature, time, fan speed, drum speed, types of probes…the list goes on and on. So, if you want to start roasting yourself, where do you start!? In the first half of this episode, I interview one of the world's leading roasting teachers who takes me through his published scientific research to give a clear answer. It’s as simple as 80%, 15% and 5%. And then, in the second half, I show you why roasting coffee consistently batch-after-batch is so difficult. But these problems are finally being solved with smart technologies. I visited the ROEST engineering team in Oslo and cracked open their innovative prototype P3000 roaster to show you the technology that allows anybody to roast coffee consistently and fully automatically. I am so impressed with these innovations, I believe they’re going to change the coffee industry. Please spread the word about The Science of Coffee! Follow me on Instagram and tag me in an Instagram story Write a review on Apple Podcasts Leave a 5 star rating on Spotify Dive deeper into the science of roasting Explore ROEST’s innovative products for the coffee industry. Learn more from Morten Münchow and his coffee roasting courses Read Morten’s paper in collaboration with the University of Copenhagen on Roasting Conditions and Coffee Flavour Connect with my very knowledgeable guests Sverre Simonsen - LinkedIn Callum Gilmour - LinkedIn Veronica Balduc - LinkedIn Morten Münchow - Coffee Mind website Scott Rao - Instagram The Science of Coffee is made possible by these leading coffee organisations BWT Water and More Marco Beverage Systems ROEST Sustainable Harvest Mahlkönig The Science of Coffee is a spin-off series from James Harper's documentary podcast Filter Stories Check out Standart, the award-winning coffee magazine. Get a free magazine and a free bag of coffee by clicking here. Use ProfilePrint to find the coffee your customers loved last year (without a week of cupping!). Use promo code "FILTER" to get 10% off your first year of a Mini Beluga subscription. Click here to discover ProfilePrint's many uses. Support hundreds of thousands of coffee farmers with Fairtrade. Discover how here. Office coffee = easy recurring revenue. WMF’s Elevation 10 and Peak 50 do the work for you. Learn more here. What kind of racing car does the Gaggia Classic GT home espresso machine remind you of? Use discount code FS202610 to get 10% off.
Jan 29, 2024 · 37 min
Science: How roasting transforms coffee beans
What flavours do you want from your coffee? Every coffee bean begins its life green. And if you brewed it up without first roasting it, you’d get a yellow-green cup of grass-flavoured water. But, as soon you apply heat to a bean, the flavour can morph to from something quite vegetative to a very acidic unripe fruit, then a very sweet fruit, and eventually dark roasted flavours. This is the magic of coffee roasting! In this episode of The Science of Coffee, I show you a full roast in action on the ROEST P3000, taste how coffee flavours evolve from acidic to bitter, and speak to leading coffee roasting scientists to reveal the mind-bending chemical and physical transformations taking place. See for yourself Roest's innovative P3000 fully automatic roaster. Please spread the word about The Science of Coffee! Follow me on Instagram and tag me in an Instagram story Write a review on Apple Podcasts Leave a 5 star rating on Spotify Connect with my very knowledgeable guests Mark Al-Shemmeri - LinkedIn Callum Gilmour - LinkedIn Veronica Balduc - LinkedIn Anja Rahn - LinkedInIldi Revi - LinkedIn Samo Smrke - Instagram Morten Münchow - Coffee Mind website The Science of Coffee is made possible by these leading coffee organisations BWT Water and More Marco Beverage Systems ROEST Sustainable Harvest Mahlkönig The Science of Coffee is a spin-off series from James Harper's documentary podcast Filter Stories Check out Standart, the award-winning coffee magazine. Get a free magazine and a free bag of coffee by clicking here. Use ProfilePrint to find the coffee your customers loved last year (without a week of cupping!). Use promo code "FILTER" to get 10% off your first year of a Mini Beluga subscription. Click here to discover ProfilePrint's many uses. Support hundreds of thousands of coffee farmers with Fairtrade. Discover how here. Office coffee = easy recurring revenue. WMF’s Elevation 10 and Peak 50 do the work for you. Learn more here. What kind of racing car does the Gaggia Classic GT home espresso machine remind you of? Use discount code FS202610 to get 10% off.
Jan 15, 2024 · 39 min
Science: Do you and I taste the same flavours?
Ever wonder why you and your friends can taste the same coffee, but you can’t agree on the flavour notes? Join me as I explore this metaphysical mystery! I speak with leading scientists and ask: are the flavour receptors in your nose and mouth the same as mine? How does music and the shape of a cup affect what we taste? What about our different cultural backgrounds and language? Best of all, I put all these questions to the test in the Athen’s World of Coffee trade show. Many poor unsuspecting Filter Stories spit, splutter and gasp in the name of science! --------- See Marco Beverage Systems' SP9 for yourself, and discover their range of consistent and energy-efficient coffee brewers for your cafe. Please spread the word about The Science of Coffee! Follow me on Instagram and tag me in an Instagram story Write a review on Apple Podcasts Leave a 5 star rating on Spotify Connect with my very knowledgeable guests Helene Hopfer - LinkedIn Joel Mainland - LinkedIn Fabiana Carvalho - Instagram Janice Wang - LinkedIn Felipe Reinoso - LinkedIn Freda Yuan - Instagram Mandy Naglich - Instagram The Science of Coffee is made possible by these leading coffee organisations: BWT Water and More Marco Beverage Systems ROEST Sustainable Harvest Mahlkönig The Science of Coffee is a spin-off series from James Harper's documentary podcast Filter Stories Check out Standart, the award-winning coffee magazine. Get a free magazine and a free bag of coffee by clicking here. Use ProfilePrint to find the coffee your customers loved last year (without a week of cupping!). Use promo code "FILTER" to get 10% off your first year of a Mini Beluga subscription. Click here to discover ProfilePrint's many uses. Support hundreds of thousands of coffee farmers with Fairtrade. Discover how here. Office coffee = easy recurring revenue. WMF’s Elevation 10 and Peak 50 do the work for you. Learn more here. What kind of racing car does the Gaggia Classic GT home espresso machine remind you of? Use discount code FS202610 to get 10% off.
Jan 8, 2024 · 44 min
Science: How to be a better coffee taster
So you’ve just taken a sip of a very rare coffee, and flavours of passion fruit explode in your mouth. But here’s the thing: that flavour of passion fruit is not coming from your mouth. It’s not even coming from your nostrils. It’s being picked up behind your eyes! In this first episode of The Science of Coffee's second series, I unravel how our sense of smell and taste works to help you be a better coffee taster. I shrink us down microscopically and we dive into your tongue to show you why good black coffee tastes sweet, even though there’s no sugar in it. We then travel up into our noses and get stuck in a lot of mucus. This slime might be disgusting, but we need it to be able to smell well. And finally, with the help of tasting expert and author Mandy Naglich, I show you three effective ways you can train yourself to be a much better coffee taster without having to go on any expensive courses. The trick is to train our internal flavour prediction models! This episode will help you deepen your appreciation of coffee and its delicious complexity. --------- See Marco Beverage Systems' SP9 for yourself, and discover their range of consistent and energy-efficient coffee brewers for your cafe. Please spread the word about The Science of Coffee! Follow me on Instagram and tag me in an Instagram story Write a review on Apple Podcasts Leave a 5 star rating on Spotify Become a better coffee taster! Pick up a copy of Mandy Naglich’s book “How To Taste” Sign up for the Specialty Coffee Association’s Sensory Skills courses Do an online sensory course with CoffeeMind Connect with my very knowledgeable guests Mandy Naglich - Instagram Linda Bartoshuk - Website Joel Mainland - LinkedIn Fabiana Carvalho - Instagram Janice Wang - LinkedIn Peter Giuliano - LinkedIn Bram De Hoog - Instagram The Science of Coffee is made possible by these leading coffee organisations: BWT Water and More Marco Beverage Systems ROEST Sustainable Harvest Mahlkönig The Science of Coffee is a spin-off series from James Harper's documentary podcast Filter Stories Check out Standart, the award-winning coffee magazine. Get a free magazine and a free bag of coffee by clicking here. Use ProfilePrint to find the coffee your customers loved last year (without a week of cupping!). Use promo code "FILTER" to get 10% off your first year of a Mini Beluga subscription. Click here to discover ProfilePrint's many uses. Support hundreds of thousands of coffee farmers with Fairtrade. Discover how here. Office coffee = easy recurring revenue. WMF’s Elevation 10 and Peak 50 do the work for you. Learn more here. What kind of racing car does the Gaggia Classic GT home espresso machine remind you of? Use discount code FS202610 to get 10% off.
Jan 2, 2024 · 2 min
Introducing: Season 2 of The Science of Coffee
We're back with another series of The Science of Coffee! Across 10 science stories, narrative audio producer and coffee professional James Harper takes you on a journey into coffee's hidden microscopic secrets. James has spent the last year traveling to Central America, Greece, Norway, Switzerland and interviewing dozens of the world’s leading coffee scientists. This insights will help you appreciate coffee more deeply and make even better coffee at home. We'll explore organic coffee growing, delve into the science of roasting, uncover optimal storage and grinding techniques, enhance your tasting skills through sensory science, and share James' journey towards thinking more like a scientist. Press the Subscribe button so you don't miss future episodes! https://bit.ly/3TdDnHO Follow James on Instagram: https://bit.ly/2Mlkk0O The Science of Coffee is a spin-off series from James Harper's documentary podcast Filter Stories: https://bit.ly/3ajoT5e The Science of Coffee is made possible by these leading coffee organisations: BWT Water and More Mahlkönig Marco Beverage Systems Sustainable Harvest ROEST Check out Standart, the award-winning coffee magazine. Get a free magazine and a free bag of coffee by clicking here. Use ProfilePrint to find the coffee your customers loved last year (without a week of cupping!). Use promo code "FILTER" to get 10% off your first year of a Mini Beluga subscription. Click here to discover ProfilePrint's many uses. Support hundreds of thousands of coffee farmers with Fairtrade. Discover how here. Office coffee = easy recurring revenue. WMF’s Elevation 10 and Peak 50 do the work for you. Learn more here. What kind of racing car does the Gaggia Classic GT home espresso machine remind you of? Use discount code FS202610 to get 10% off.
May 29, 2023 · 44 min
History: America’s love affair with coffee
America is coffee-obsessed. From Central Perk’s red couch being the centre of major plot twists in Friends to the fact the average American drank more than two cups a day. And the conventional explanation is pretty straightforward: an English colonist introduces coffee to Jamestown in 1607. 150 years later Americans rebel against the British by throwing tea chests into Boston harbour and drinking coffee becomes their patriotic duty. Oh, and of course who won the civil war? The side that had the coffee. But, actually, the truth is much more surprising, and reveals a much more counter-intuitive story of America. In this final episode of Series Two of A History of Coffee, we offer you a story of America through the lens of a black drink, another black drink, a third black drink and perhaps even a fourth. A History of Coffee is a collaboration between documentary maker James Harper of the Filter Stories coffee podcast and Jonathan Morris, Professor of History and author of ‘Coffee: A Global History’. Don't miss future episodes by pressing the 'Subscribe' or 'Follow' button in your podcast player. ----------- Please spread the word about A History of Coffee! Follow us on Instagram - Jonathan (@coffeehistoryjm) and James (@filterstoriespodcast) - and tag us in an Instagram story. Write a review on Apple Podcasts (http://apple.co/3jY42aJ) Leave a 5 star rating on Spotify (https://spoti.fi/3K2h4RQ) This free educational content for the coffee community was made possible by Rancilio, manufacturers of professional Italian espresso machines for your home and coffee bar for almost 100 years (https://bit.ly/3U3oLMz) Read Jonathan’s book, ‘Coffee: A Global History’ (https://amzn.to/3dihAfU) Listen to other coffee documentaries on James’ Filter Stories podcast (https://bit.ly/3ajoT5e) Download all episodes of this second series right now by subscribing to the ‘A History of Coffee’ podcast channel (http://bit.ly/2NArChO) Learn how Brazil massively expanded output in episode three of the first series of A History of Coffee: Coffee Catches Fire (https://bit.ly/2NArChO) Brew up some Yaupon Holly! (https://bit.ly/40R6IuY) Discover Deb Hunter's All Things Tudor podcast (https://bit.ly/3L5OZet) Check out Standart, the award-winning coffee magazine. Get a free magazine and a free bag of coffee by clicking here. Use ProfilePrint to find the coffee your customers loved last year (without a week of cupping!). Use promo code "FILTER" to get 10% off your first year of a Mini Beluga subscription. Click here to discover ProfilePrint's many uses. Support hundreds of thousands of coffee farmers with Fairtrade. Discover how here. Office coffee = easy recurring revenue. WMF’s Elevation 10 and Peak 50 do the work for you. Learn more here. What kind of racing car does the Gaggia Classic GT home espresso machine remind you of? Use discount code FS202610 to get 10% off.
May 15, 2023 · 44 min
History: Italy’s democratic espresso culture
One morning back in the ‘80s, Howard Schultz walks out of his Milan hotel, stumbles into an espresso bar, and fundamentally changes coffee history. He discovered (and then popularises) the iconic, timeless Italian coffee experience: Rich thick coffee, an affordable price and great theatre. But this Italian ritual is surprisingly young, so young that Howard Schultz was in school while some of it was being developed! In this third episode of Series Two of A History of Coffee, we show you why for most of Italy’s history, coffee was thin, expensive, dull to watch…and that’s if you were lucky enough to even be drinking the real stuff at all! A History of Coffee is a collaboration between documentary maker James Harper of the Filter Stories coffee podcast and Jonathan Morris, Professor of History and author of ‘Coffee: A Global History’. ----------- Don't miss future episodes by pressing the 'Subscribe' or 'Follow' button in your podcast player Please spread the word about A History of Coffee! Follow us on Instagram - Jonathan (@coffeehistoryjm) and James (@filterstoriespodcast) - and tag us in an Instagram story. Write a review on Apple Podcasts (http://apple.co/3jY42aJ) Leave a 5 star rating on Spotify (https://spoti.fi/3K2h4RQ) This free educational content for the coffee community was made possible by Rancilio, manufacturers of professional Italian espresso machines for your home and coffee bar for almost 100 years (https://bit.ly/3U3oLMz) Read Jonathan’s book, ‘Coffee: A Global History’ (https://amzn.to/3dihAfU) Listen to other coffee documentaries on James’ Filter Stories podcast (https://bit.ly/3ajoT5e) Download all episodes of this second series right now by subscribing to the ‘A History of Coffee’ podcast channel (http://bit.ly/2NArChO) Go deeper into the story of espresso machines: James' science podcast about Espresso Machine Technology Neapolitan coffee maker (https://bit.ly/3zZCivl) Espresso at 1906 World’s Fair in Milan (https://bit.ly/3MOX7kQ) Rancilio's Museum, Officina Rancilio 1926 (https://bit.ly/3Q7vqTI) "La Cornuta" espresso machine (https://bit.ly/41uBryd) Rancilio's Berlin Showroom, the BER Rancilio Station (https://bit.ly/3mD0lNA) Check out Standart, the award-winning coffee magazine. Get a free magazine and a free bag of coffee by clicking here. Use ProfilePrint to find the coffee your customers loved last year (without a week of cupping!). Use promo code "FILTER" to get 10% off your first year of a Mini Beluga subscription. Click here to discover ProfilePrint's many uses. Support hundreds of thousands of coffee farmers with Fairtrade. Discover how here. Office coffee = easy recurring revenue. WMF’s Elevation 10 and Peak 50 do the work for you. Learn more here. What kind of racing car does the Gaggia Classic GT home espresso machine remind you of? Use discount code FS202610 to get 10% off.
May 1, 2023 · 47 min
History: Haiti, Colonialism and Coffee
Haiti was once the biggest, most profitable coffee growing region in the world. But today Haiti is one of the world’s poorest nations where you can’t get a bag of Haitian beans delivered to Berlin in a week for love nor money. In this second episode of Series Two of A History of Coffee, we show you how colonialism and racism dragged Haiti into poverty, and the role of coffee at the centre of it. Be warned: this episode contains graphic descriptions of violence. A History of Coffee is a collaboration between documentary maker James Harper of the Filter Stories coffee podcast and Jonathan Morris, Professor of History and author of ‘Coffee: A Global History’. ----------- Don't miss future episodes by pressing the 'Subscribe' or 'Follow' button in your podcast player Please spread the word about A History of Coffee! Follow us on Instagram - Jonathan (@coffeehistoryjm) and James (@filterstoriespodcast) - and tag us in an Instagram story. Write a review on Apple Podcasts (http://apple.co/3jY42aJ) Leave a 5 star rating on Spotify (https://spoti.fi/3K2h4RQ) This free educational content for the coffee community was made possible by Rancilio, manufacturers of professional Italian espresso machines for your home and coffee bar for almost 100 years (https://bit.ly/3U3oLMz) Read Jonathan’s book, ‘Coffee: A Global History’ (https://amzn.to/3dihAfU) Listen to other coffee documentaries on James’ Filter Stories podcast (https://bit.ly/3ajoT5e) Download all episodes of this second series right now by subscribing to the ‘A History of Coffee’ podcast channel (http://bit.ly/2NArChO) Check out Standart, the award-winning coffee magazine. Get a free magazine and a free bag of coffee by clicking here. Use ProfilePrint to find the coffee your customers loved last year (without a week of cupping!). Use promo code "FILTER" to get 10% off your first year of a Mini Beluga subscription. Click here to discover ProfilePrint's many uses. Support hundreds of thousands of coffee farmers with Fairtrade. Discover how here. Office coffee = easy recurring revenue. WMF’s Elevation 10 and Peak 50 do the work for you. Learn more here. What kind of racing car does the Gaggia Classic GT home espresso machine remind you of? Use discount code FS202610 to get 10% off.
Apr 17, 2023 · 45 min
History: How coffee houses changed the world
A coffee shop is a lot more than just a place to drink coffee. The seats and sofas encourage you to invite a friend, and chat. And chatting is powerful: ideas that emerge from these caffeine-fuelled conversations give birth to modern finance and even the founding of great artistic and scientific institutions. Meanwhile, other ideas threaten those in power, and have led to many attempts to ban coffeeshops (and even coffee itself!) these last 500 years. In the first episode of Series Two of A History of Coffee, we show you how the coffee shop changed the world, and we ask whether it still has what it takes to upend society. A History of Coffee is a collaboration between documentary maker James Harper of the Filter Stories coffee podcast and Jonathan Morris, Professor of History and author of ‘Coffee: A Global History’. ----------- Don't miss future episodes by pressing the 'Subscribe' or 'Follow' button in your podcast player Please spread the word about A History of Coffee! Follow us on Instagram - Jonathan (@coffeehistoryjm) and James (@filterstoriespodcast) - and tag us in an Instagram story. Write a review on Apple Podcasts (http://apple.co/3jY42aJ) Leave a 5 star rating on Spotify (https://spoti.fi/3K2h4RQ) This free educational content for the coffee community was made possible by Rancilio, manufacturers of professional Italian espresso machines for your home and coffee bar for almost 100 years (https://bit.ly/3U3oLMz) Read Jonathan’s book, ‘Coffee: A Global History’ (https://amzn.to/3dihAfU) Listen to other coffee documentaries on James’ Filter Stories podcast (https://bit.ly/3ajoT5e) Download all episodes of this second series right now by subscribing to the ‘A History of Coffee’ podcast channel (http://bit.ly/2NArChO) Check out Standart, the award-winning coffee magazine. Get a free magazine and a free bag of coffee by clicking here. Use ProfilePrint to find the coffee your customers loved last year (without a week of cupping!). Use promo code "FILTER" to get 10% off your first year of a Mini Beluga subscription. Click here to discover ProfilePrint's many uses. Support hundreds of thousands of coffee farmers with Fairtrade. Discover how here. Office coffee = easy recurring revenue. WMF’s Elevation 10 and Peak 50 do the work for you. Learn more here. What kind of racing car does the Gaggia Classic GT home espresso machine remind you of? Use discount code FS202610 to get 10% off.