Best one pound of food with longest sustaining calorie/energy per pound

[Starchild]

I have seen some of those Epic bars in the local stores...I'll probably give one a try. I'm trying to put a little more variety into my mid-day break -- it's been mostly jerky & pepperoni (along with some type of cheese and dehydrated fruit.) I can't bring myself to eat tuna. Spam can be good, though.

The Epic bars are really awesome, it's like having real food in a snack form, and super tasty.