One good option to consider for your survival ration is the S.O.S Rations Emergency 3600 Calorie Food Bar. This food bar is intended to provide the recipient with a 3-days supply of 1,200 calorie portions per day (three bars at 400 calories per bar) which will give you that much needed energy to handle your survival tasks and respond accordingly to your situation. These fortified, baked, coconut flavored bars are easily digestible and are compatible with any restrictions (such as drinking law restrictions). The serving size is 1 cookie and weighs approximately 84 grams which makes these bars compact and easy to carry. It’s hard enough to survive in an emergency situation as it is let alone having to carry around all of your gear which makes these lightweight food bars ideal. Additionally, these bars have been approved by the U.S. Coast Guard for a five year shelf life (from the date it was manufactured) regardless of the climatic condition. Finally, since these food bars do not have a “crumby” texture or anything of that nature they do not make you thirsty which means you can save on your water consumption. Overall, this is a great product to add to your survival gear.