Energy bar

From Trail-Finder -- Dedicated to getting you outside

Take a granola bar and turbo-charge it and you get an energy bar. Made by several companies, they're more expensive than granola bars, and many people don't like the flavor, but some people swear by them on a long trip. In any case, like most things, they're probably worth trying. If you like them, stick with them. If not, try something else.