I've been following this thread very closely and recently gave it a go myself, they didn't come out as strong as i thought they would, so i spent a little time investigating.

Using an Infrared Surface Temperature thermometer i discovered after an hour with the lid on, the sides of my Crockpot reached about 195, but the dish in the center of the Crockpot only reached 137 Fahrenheit.

My Crockpot is a large RIVAL brand. Perhaps this is the reason some people in here are having potency issues. :jointsmile: