MRI's have come a long way ...... Remember a meal in the 'bush.' Loaded M15 across my lap, back to a tree. The can fill date was in mid- WW2. 15'ish years old, but still 'eatable' depending upon how hungry you were.
Kidding aside, every home should have at least three or four days of these things in storage. Ship Happens. Add heated water and you're eating.
Edit: Speaking of water; you'll need far more
than you think. Don't use tap water, drop a dollar and get gallon containers of distilled.