《天工开物·下篇·曲蘖》
每石熟饭中加入曲种二斤，趁热几个人一起迅速拌匀，直到饭冷为止。
每曲饭一石入信二斤，乘饭热时，数人捷手拌匀，初热拌至冷。
Add two kilograms of koji to each stone of cooked rice, and several people mix it quickly while it is hot, until the rice is cold.