yeah, just kidding about the microwave. i was thinking of using the heating pad this time around, but then I wld have to keep opening the containers to test the temperature..Seems kinda clumsy. and now i see the value of your little custard pots anne, cos now I have defrosted this starter, I kinda have to use it up. I'm pretty sure refreezing is out. I guess I could toss the left over starter. Or just save it in the fridge for tomorrow's batch. I actually like the nutty soy flavour. Kind of digging it.