A crock pot on low is too hot. You still have to turn it off and wrap the pot. Basically it needs to be kept just a bit warmer than body temp for a long time. I can set my electric oven as low as 110 degrees. I'm thinking of trying to use it as an incubator for yogurt. I've been reading and hearing that full-cream plain Greek yogurt is the most healthful to eat. But it is hard to find. Guess I should make some again. Thanks for posting and getting me brave enough to try it again. I made it all the time when we lived in Papua New Guinea because we couldn't buy it there. But have not been very successful since we are back in the States. I blame our milk. In PNG I used powdered milk and the powdered milk we got there and the kind we buy here are very different. (Plus we can only get skim milk powder, no full-cream.) Guess I'll try using regular (liquid) whole milk.