Water works for me. Bananas and Luna bars, too. My 14-mile commute every morning is done without food beforehand (can't eat that early, either), but when I get to the office, I'm HUNGRY!

My longer rides do include bananas and Luna bars and water. Nothing more is needed for me, but we are all different.

We should just be aware of the marketing that strives to make us NEED special foods for riding. I just don't think most of them are necessary.