you can buy MRE's at any local army/navy store...
but these are where it's at:
This package will feed 4 people for 1 month at 2 meals per day for a little over 100 dollars per person per month or 2 people for 2 months etc. The meals are in foil wrappers. All you need to do is boil water, add the boiled water to the foil pouch wait a few minutes and eat. So you need water, a pot to boil it and a spoon.
The shelf life is 25 years!
Everyone should have this or something like it at home