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These bars come in blocks that give you about 3600 calories per block. But the bars come in individual packaging each giving you about 200 - 400 calories per bar. So each block will last you about 3 days (1200 calories per day).
And because they are compact and lightweight they can be easily packed in a backpack or go-bag.
2) Non-thirst Provoking
These bars are made with lower protein to be non-thirst provoking. So you don't need water to wash them down. This is particularly handy in situations where your water may be limited like emergency situations or outdoor activities.
3) Long 5+ Year Shelf Life
These bars are sealed to give you a long 5 year shelf life. So you really don't need to worry about changing them out every year.
Where To Buy?
You want to find rations that meet the guidelines of professional organizations like the U.S. Coast Guard or Department of Defense. You have a couple of options with emergency food rations:
These are very popular and come in 3600 calorie units. Each bar in the block gives you 200 calories each (18 bars). Datrex Food Rations are used by the American Red Cross, U.S. Coast Guard.
They are immune to heat or cold and taste kind of like a coconut cookie. You can buy them individually or by the case here.
These also come in 3600 calorie units. But each bar in the block gives you 400 calories (with 9 bars).
They are approved by the US Coast Guard and Department of Defense. These have a very popular vanilla/lemon flavored 'cookie dough' taste and have been rated #1 for taste according to Nitropak.
Mainstay is Kosher approved and it meets the dictates for Halal. Another benefit is that each bar exceeds the RDA requirements of vitamins and minerals.
Emergency ration bars are popular if you're building a 72 hour survival kit, eathquake preparedness kit or you just want a compact, high calorie food ration bar for your food storage or outdoor activities.
Emergency Food Ration bars have several benefits:
1) High Calorie But Lightweight