Back in January, I started a double batch of sake with my own koji from Vision spores, with some nice short grain Hitomebore. Just standard white rice really. 80% I'm estimating. I did it with the forethought that I wanted to experiment a little bit.
I pressed yesterday and got 4.5 gallons, about 3/4 of a gallon's worth went on top of 3/4 lb freshly roasted cocoa nibs.
Given how few water extractables there are in fresh cocoa, I gave it a moderate grinding and added relatively speaking quite a bit. My hope if something with a delicate chocolate aroma and taste. Right now the color is dead on what I was hoping for. We'll see how the flavor is in about a month. Basically whenever it is all settled.