Red yeast was first invented in China and has a history of more than a thousand years of production and application, and is a traditional product of rice fermentation unique to China and neighboring countries. Red currant rice synonyms: red currant; red currant; red rice; Fu rice. Properties: brownish-red to purplish-red rice grains. Source: indica rice, round-grained rice, glutinous rice and other rice as raw materials, fermented with Aspergillus oryzae, brown-red or purple-red grains.