I don’t think of freeze dried food for survival. They seem specialized for backpacking where weight is critical and cost is not a big issue because of limited number of meals. In my Camelback PSK I have a couple candy bars and some raisin, peanut, M&M, and Cheerios mix. I can’t keep food in my car because it is too hot in Arizona. We keep a couple weeks of food in the pantry at home. If we had to evacuate we would take food that was easy to store and prepare.

Here in Arizona, if you are stranded in the desert, water is the limiting factor. If you don’t have a lot of water then don’t eat. It takes water to digest food. The word is carbohydrates take less water than proteins.