Yep, anything you see in a can on the shelf at the grocery store you can duplicate at home. Tuna casserole, chinese food, stew, it can all be put up. What I like is you can do more exotic stuff at home, like venison chili, or elk stew, or moose stroganoff, and it is something you'll never find on a grocery shelf. Fresh is always better. Variety is a close second.
It would be cool to see a community throw in for a commercial retort packager. Imagine bringing your food to a local facility where they will seal it in single/multi serving foil packages like MRE containers. I understand there are some Mormon communities that do something like that with traditional mason jar canning. I think you could save a bundle if you made it a community event and got a couple of pros to help with quality control etc. We used to take the salmon we caught to a local cannery who'd put it in tuna sized tins for us.
Then again, there's a reason a can of corn costs 50 cents and a can of chili a buck. I doubt you could match that if you factored in the time it took to do it yourself. At $65 an hour, my time would make that corn/chili damned expensive. I guess it's a good thing I enjoy doing that sort of stuff, cuz I ain't doing it to save money.
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The ultimate result of shielding men from the effects of folly is to fill the world with fools.
-- Herbert Spencer, English Philosopher (1820-1903)