Three years ago I made some basic Italian beef with pureed tomatoes and red wine. I had leftovers and canned them for later.
Combine that with oven fries, smoked mozzarella and some seasonings and we have this monster meal. Not available in stores.
Cost: $4.00
Definitely pressure can. As long as the lids are sealed the food is still edible. You will lose micro nutrients over the years but the macros will still be there.