Definition of koji in US English:

koji

noun

  • A substance made by combining a cultivated mold with rice, soya, or other foodstuffs, used to make fermented foods and drinks such as soy sauce, sake, and miso.

    The main mold used is Aspergillus oryzae

Origin

Japanese.

Pronunciation

koji

/ˈkoʊdʒi//ˈkōjē/