Canned meats and fish tend to be salty and have other undesirable ingredients. You can lessen the effects by rinsing thoroughly.
Lunch meats can also be boiled, just balance out how much taste you want to lose versus how much processing ingredients are removed.
It is possible to grow & freeze dry your own “crap”. There is a home freeze dryer on the market (harv*st right dot com). No chemical use at all.
i have one. love it!
Ours runs 24/7! Am amazed at how many things are better with rehydrating.
Soups and stews are the best. I have a ham and bean soup that is my favorite. Ever watch "retired at 40"? He's a great resource.