I was thinking Coca Cola, but coffee is pretty weird too :) I don't really have much to back up "most popular beverage", but I recall reading somewhere that th

I was thinking Coca Cola, but coffee is pretty weird too :) I don't really have much to back up "most popular beverage", but I recall reading somewhere that the phrase "coca cola" is the most universally recognized fragment of speech in the world. Technically I suppose water would be more "popular", but different languages tend to have their own words for that.