I don't know the method, I was hoping to pick up on some wisdom, lol. I'll have to try it at some point. I did try a russet in a bucket one year (I rhyme! Kinda) before I was allergic, and the GREENS GREW LIKE CRAZY. I left a little headspace in the bucket because I had read that I would need to build up the soil later, so I did that, and then it kept going crazy. So I literally wove grapevine around the top of the bucket to extend it by like eight inches and filled that. And then it still went crazy. And then it died. I didn't get any taters - but a lot of leaves, lol. Learning experience!