I was out of starter for making rice koji. It came the day I set up a batch of rice for koji making. I figured I could use tane koji for barley instead. It wouldn’t make much difference really. But it came, and I did it right. 

Here I’m mixing in fresh air and breaking up clumps.  

I think I’ll make the next batch of rice koji with tane koji for barley anyway, just to see what difference it makes. I’ve done it before, but a long time ago and don’t remember any details.