A substance made by combining a cultivated mould with rice, soya, or other foodstuffs, used to make fermented foods and drinks such as soy sauce, sake, and miso.
The main mould used is Aspergillus oryzae
Origin
Japanese.
Definition of koji in US English:
koji
nounˈkōjēˈkoʊdʒi
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.