a fungus, Aspergillus oryzae, used to initiate fermentation of a mixture of soybeans and wheat in the production of soy sauce.
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How to use koji in a sentence
koji Uehara, on the other hand, was nothing short of spectacular this season as the Red Sox closer.Up to Speed: The Red Sox and Cardinals World Series Showdown | William O’Connor | October 23, 2013 | THE DAILY BEAST
The koji is converted into moto by adding it to a thin paste of fresh-boiled starch in a vat.
The third stage consists in adding more rice and koji to the moto, together with some water.
The material, now consisting of the bran felted together with fungus mycelium, is called taka-koji.