Making Tempeh

Growing my own tempeh has been on my list of things to try. I have recently received a free sample of tempeh starter from Tempeh Info. So way I go to give it a try. I was a bit nervous to keep a constant temperature of around 30deg C to incubate the beans. I don't want to spend ££ to buy/build an incubator, so I racked my brain and find what I already have at home. I started gathering a few