3
non-standard recipes
(midwest.social)
Canning and preserving food. Includes dehydrating, freeze-drying, etc.
Someone else already touched on the pressure canner in another comment.
Sometimes there are areas where you need to follow the rules and guidelines for safety reasons and shouldn't improvise, and canning is one of them. It's kind of like how if you get a prescription from your doctor, you follow the directions and don't get creative. If you don't follow the directions, you might die.
The USDA has a big book called The Complete Guide to Home Canning. You need to get the most recent version. The last time it was revised was 2015, but they do revise the safety guidelines every so often, so you shouldn't use a copy from the 1980s or anything like that. This is a comprehensive book based on science and it should be able to answer most of your questions. The Ball Complete Book of Home Preserving is good too and has more recipes, but I would probably give preference to the USDA. The USDA website has a ton of resources too, but the book is good to have on hand.