I'm looking for a small and efficient heat source so that I can use a camping cooler for making yogurt and other lacto-fermented stuff. In my last apartment I had a gas oven that maintained 105°F all by itself, because of the pilot light.
But I just moved, and the appliances here are electric.
For now I am using a cooler with a light bulb inside, but of course that is not cost effective. Can anyone recommend some kind of cheap device that I could put in the cooler to keep it around 105°F? Thanks for your help.
Byron