Shevuot 23: How Precise an Oath

When we talk about eating and drinking - is drinking included in an oath about eating, or not? With practical implications for whether offerings would be required after violating the oath (or perhaps not). Also, the case of one who takes an oath not to drink - without specification - and then drinks many things - he still is liable only for one offering. What if he gives a list of things he won't drink? Is that to exclude everything else, that he might be willing to drink, or is it just about the moment and the beverages before him? How complete of a statement does he need?