Although the production of koji (malt grown on rice used as a starter to make sake) is completely included in the job of a toji group at present, it was not included in the job of a sake brewing specialist group yet, and it was not even the job of a tsukuri-zakaya before the Koji Riot of the Bunan Era occurred in 1444.
文安の麹騒動（1444年）以前は、現在では完全に杜氏集団のなかの仕事である日本酒麹についても、まだ酒造りの職人集団の仕事ではなく、造り酒屋の仕事ですらなかった。