Ewww... I can't stand the taste of that stuff. Schnapps all the way!
I don't eat much while I game (In fact I don't really eat that much at all. A couple snacks, dinner, and that's it.) but if I do I'm probably snacking on my favourite sweets product: ALTOIDS!!! I friggen' LOVE Altoids. Maybe it's because I'm the worlds biggest menthol addict and the fact that Altoids are the best of the best when it comes to mints, but I go insane if I don't have at least 10 tins of altoids nearby. When I start eating them though I believe my rate is 25 mints a minute or something like that. All I know is they go fast, but I love them so much.
I also drink tons of tea. Hot tea, sun tea, ice tea... I usually brew my own tea, but there's also this one Chinese brand with a name I cannot read (I can guess what those characters mean since I speak Japanese, but they have different meanings usually ) that's really good. It's very relaxing.