Depends on the size of your family and the time period in which you’ll use it. Once mylar or buckets are open, they are susceptible to many organisms that will make your food inedible. Double to triple serving sizes max. Filling tummies is fairly easy. Doing it safely and palateably is different. Also, your family will need variety to keep harmony. Much of our emotional well-being depends on the gut.
Though its light weight and long shelf life are ideal for navigating harsh conditions, freeze-dried food is probably most famous as a cultural curiosity: Like many Americans, I discovered it in a museum gift shop, gawking at the styrofoam-like ice cream that astronauts used to have for dessert. More recently, I encountered it at a disaster preparedness convention in Raleigh, North Carolina, where smiling, gray-haired preppers manned tables piled with plastic bags full of vegetables, meats, and stews.