I know, but you eat and drink every day, right? you don't have to consume new unfamiliar foods; drinks and supplements to ride long distances. you can eat and drink regular stuff (so long as it's the RIGHT STUFF and TIMED properly). I'm a big fan of bananas; raisins; and turkey sandwiches but timing is everything.
I work with a guy who swears by peanut butter and jelly sandwiches and he rides alot!