I went ahead and did all seven batches I was talking about. Here's the thumbnail sketch of them. I'm to tired to be really in depth, but I need to get everything down while it's all still in my head.
The nutrient batches have 1/8 tsp of yeast nutrient dissolved in the water before cooking. Each batch contains 1 1/2 cups of dry jasmine rice cooked with a 1:1.5 ratio of rice to water and has been cooled overnight.
1. 3 tbs crushed RYR + 1/3 oz crushed yeast ball (control)
2. 1/3 oz crushed yeast ball (control #2)
3. 3 tbs crushed home dried RYR
4. 3 tbs crushed home dried RYR + 1/3 oz crushed yeast ball
5. 3 tbs refrigerated RYR starch mass
6. 3 tbs crushed RYR + 1/3 oz crushed rice yeast ball + nutrient
7. 1/3 oz crushed yeast ball + nutrient
I found the home dried RYR to be extremely hard and impossible to crush in my mortar and pestle. I used my coffee grinder, which is stainless and comes apart enough to be cleaned really well, to powder it.
The batches are in order from left to right in the following pictures.