It would also be good to have trapping, and hunting equipment on hand. Things like compound bows; machetes, knives, a knife block, snare wire and a rifle with ammunition would be a few things to start with. Prepper food-storage is needed, but in times of adversity and emergency, having a way of protecting yourself and a way to hunt food is optimal and ideal.
Freeze-dried food is nothing new. As early as the 13th century, the ancient Quechua and Aymara people of Bolivia and Peru pioneered a form of the process by exposing potatoes to the freezing temperatures of the Andes overnight, then drying them in the sun. In 1937, Nestlé used industrial technology to create the world’s first freeze-dried coffee, and in the 60s and 70s, the US military shipped freeze-dried food rations to the troops in Vietnam.