Pro: light (in spite of what has been said) they last forever
Con: expensive, bland, not much food, high sodium, did I say expensive, require water
I sometimes carry one freeze dried meal as a survival meal. Someone usually gives me one they don't want.
You can eat lighter out of the grocery store. Do a search on calories per ounce. Appalachian Trail thru-hikers are very serious about this, trying to get max calories per ounce. Their goal is 100 calories/oz.
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