I would love the ghee instructions.
I love this way of canning better. Don’t need to pressure or water bath can at all. Sounds like the premise might be the same as dry canning for beans and rice, where you heat them in the oven and then put the lid on and as the air cools it condenses creating a vacuum.
How long does your butter last this way?
I do toasted pumpkin seeds that way. Toast them and heat the jars and lids and while everything is hot, put the pumpkin seeds in the jar and seal it up.