In an emergency, food quantity is more important than kind and variety; a combination of several staples almost always provide an adequate diet, and adequate calories almost always include enough protein. The local feed store, which sells seeds and feed grains, is as good a source of food as the grocery, and nearby farms might have stored grain; an acre of corn that produces 75 Bu. can feed five people for a year. Seed sprouts, especially if exposed to the sun for a day, are a good source of vitamins and minerals. A supply of cooking oil, lard, or shortening (the longest shelf life) is important. The salt for water softeners can be used for meat preservation.