Rice koji (米こうじ, 米糀, 米麹) is steamed rice that has been treated with koji mold spores (Aspergillus oryzae, koji-kin 麹菌). Koji has been the key ingredient to make miso, soy sauce, sake, mirin, rice vinegar, amazake, shochu, and shio koji.
Where to Get Rice Koji
- Amazon – Miyako Koji
- Grocery stores (US) – Cold Mountain
Recipes you can make with Rice Koji