Hi Naf,
For regular mushroom rice, here is a good link.
For my recipe, there is no absolute defined ingredients, but my is based on:
- mushrooms (1 type, or 2 types)
- a small carrot – slice the carrot
- chicken – chopped up to bits
Of course, you can add other ingredients depending on the seasonal vegetables. Adding winter bamboo shoot or autumn chestnuts have great symbolism.
Matsutake mushroom is unique and highly regarded, so for matsutake rice, you would want to only focus on matsutake. Best wish.