I use this system [0], which is basically foolproof and is easy as pie. The end results are amazing. Right now I have two jars of blended up hatch chiles (with onion, garlic, carrots, and 4% salt by weight) on the counter, probably two more months to go on them. It's a super fun way to make food.

[0] https://nourishedessentials.com/products/the-easy-fermenter