Not to bring up bad memories, but (as I mentioned a few months ago) about a year ago I was cleaning out my parents' garage and found the box of emergency food, aka MRE's. Most dated from late 80's early 90's, I'm guessing (since my dad retired about '95). Edible, for the most part.
Anyway, in the box I also found 2(!) C-rat's... NO, I didn't trust my stomach to be able to handle those. Dad's still got them somewhere.