What are the criteria that I should worry about when buying energy bars ?
What are the ingredients to avoid and those to look for ?
Here are a few things I look for:
I'm not aware of one single bar that matches all of these requirements. Cliff Bars don't freeze or melt easily, but they are mostly made of highly processed food goop. Fruit-and-nut bars are highly palatable, but don't have all that much protein.
Its not a bar, but jerky is easy to carry and store, and can also be a good option for protein sometimes.
Honestly, I think taste is most important. There have been times before where eating hardly anything but energy bars for a few days makes starving to death seem appealing.
Jerky is pretty good, as DavidR mentioned, just don't ever bring that unless you have access to virtually unlimited water. Jerky is loaded with salt and your kidneys will be in turbo-mode when eating it.