I also hunt, fish, farm and have water on a large piece of land. But for those without that I get 1 to 3 years of food stores. Buy bulk rice, beans, lentils, split peas and any other kind of dry food that keeps for a long time. I'd also stock up on canned chicken/beef/pork stock to cook above mentions food stuffs with to make meal tasty. If you got guns, stock up on ammo.