Mine has to be an unopened jar of chow chow I bought at an outdoor
festival about 5 or 6 yrs. ago. The woman looked down and out, had
come many miles to hawk her wares, and the price was decent. I think
I bought 6 jars of the stuff from her.

I once had a small can of beanie-wienies, from a motorcycle trip. We
carried it as an emergency meal in case we got stuck in the boonies.
It was a souvenir after the first 5 years after it came off the bike
and into my pantry. I think I finally dumped it ten years later.