Datrex 3600 calorie emergency food bar pack with 18 individually wrapped food bars – enough for 72 hours (3 days). U.S. Coast Guard approved, 5 year shelf life. All natural ingredients, no nuts, non-GMO. We tested all the emergency food options on the market, and these were the ones we found tasted the best. They provide good energy and don’t make you thirsty. However, note that 1200 calories a day is a minimum daily caloric intake – don’t expect to feel full. Still, you will want something to hold you over until food becomes available after a major disaster.