Hey it's Margaret, the maker of nudefood nut butters. Currently my PB production consists of me in the kitchen filling up glass jars with my trusty nut grinder. Nuts go in, and peanut butter comes out - it's as simple as that!
One of my favourite things about my nut butters (other than them being extremely healthy + delicious) is that you can give back your used jars! I will gladly pick them up to sanitize and reuse to fill my next freshly made batch of PB.