I'm just getting started on a sake adventure. It's bad when even the LHBS says "don't do it - everybody I know that's tried to make it has hated their version". The other LHBS said "I don't carry anything for it, because I don't like it. The best I can do is pronounce it."
So ... in light of this ... I'm wondering about making kome-koji. I realize it is needs a tropical type environment, like most molds. Warm, moist, etc. I was thinking of using an aquarium heater to heat the water up to a certain temperature within a ice cooler. The aquarium heater cost ~20 USD, and just has to be submerged in water. This should provide a nice humid, temperature controlled environment, without sacrificing my lagering fridge's temperature control. Granted, it means it is a one purpose tool - and that's always something to be avoided, but it is an option!
Also, I'm not sure if it taboo, but there is a Taylor-made guide for "make sake" ... if your google-fu is weak, I'm sorry. How good is this guide as opposed to the one that posted previously in the thread?