I'm looking for advice on making a yogurt incubator. The commercially-available devices I've seen so far make a maximum of 1000ml of culture. But after filtration (to get the texture right), the yield is only about 600ml. I'd like to treble this batch size. The idea so far is to use an insulated picnic hamper, and install a suitable low wattage heater and a thermostat to keep the culture at about 43C. The culture would be in 3 x 1000ml plastic jugs inside the hamper.
Suggestions gratefully accepted, especially from anyone who has been there/done that/etc.
Ian