I always keep around some nuts as a sort of emergency supply in case any other food I may be carrying goes bad or whatever. They pack quite a punch and you don't even have to cook them. I don't drink coffee, but I do drink Cocoa (Hershey brand when I can find it). The rest of the food is whatever I can find, have recipes for and the tools to cook with. Oats are good for breakfast and easy to make if you thermos cook it the night before.

http://www.healthaliciousness.com/ar...orie-foods.php

Another recommendation towards learning about edible plant life. I favor acorns and cattail.

http://www.tacticalintelligence.net/...-your-life.htm