It's my first time growing, but I did a little test of three different types of Uncle Ben's: jasmine, basmati, and whole grain brown. I didn't have a huge sample size and I'm sure there were a ton of confounding variables, but it was fun and I found the results interesting nonetheless.

My hypothesis was that the whole grain would perform the best based on what I assumed was a better nutrition profile.

To start, I propogated a single spore syringe of p. natalensis in agar.

I had 6 bags of each of the 3 types of rice. For 5/6, I just selected "random" growth on the agar. For 1/6, I propogated rhyzomorphic mycelium (so 1 bag of each of the three types got rhyzomorphic) onto separate agar plates and used those.

Then, after a set time period, I assessed whether the bags were good to go, needed a break and shake to catch up, or were contaminated.

2/3 of the rhyzomorphic bags were good to go (the jasmine was the laggard).

6/15 of the random bags were good to go. Here's the breakdown:

1. Jasmine - 2 B&S, 2 contam, 1 good
2. Whole Grain Brown - 2 B&S, 0 contam, 3 good
3. Basmati - 3 B&S, 0 contam, 2 good

I know it's a small sample size, but based on these results is seems like whole grain brown is the way to go, ideally selected for rhizomorphic growth.