Andie, I would have thought that organic milk would be better too - but it was a complete failure the one time I used it, and normal commercial worked fine. I will have to try with organic milk again sometime, but after I had finished the heating phase, there was a definite layer of yellow fat floating on top of the milk, and if you dont disturb the yoghurt as it is setting, how does that fat get reincorporated into the yoghurt??