@AnneBonny. Lol! I agree about being intimidated by pressure cookers, myself. The new electric ones, with all the safety features, just seem safer, otherwise my stoned, silly butt wouldn’t go anywhere near a pressure cooker. 
I was looking at the mota maker & mbm, and they use a small amount of pressure to get the job done. I thought to myself, hmmmm…I wonder how a pressure cooker would work? There aren’t too many online articles about it, well, at least not as many as I thought there’d be.
I’m going to try the jar method: put ground herb & oil in mason jar; put on lid as if canning, leaving it loose enough for pressure to escape; place jar inside pot; add water to halfway up jar; start pressure cooking for 60-90mins; cool; release pressure; strain; store. From the few things I’ve read, since the temps get to about 250 in a pressure cooker, the process even decarbs. 