In the meantime I’ve checked a few recipes. This one should last six months or so, without additional conservation methods, but it takes 10~12h of oven time. This one seems more practical and requires only 2~3h of oven time, at a slightly higher temperature, but it’ll last refrigerated for four days - past that it needs to be frozen.

You could also use an air fryer for that, I bet that it would go way faster.