The Mainstay Emergency Food Ration lemon-flavored bar is unlike any other emergency food bar. This food bar is great tasting, does not provoke thirst and it is long lasting with a five-year shelf life. It's enriched with vitamins and minerals and is certified kosher. This is a vacuum sealed, water-proof package of nine pre-measured 400 calorie bars. You absolutely need several of these packs for your bug-out bag or camping gear! They have the healthy calories you need to survive!