You Collection, Lower Volume Radical: Wine (yǒu) Kangxi Strokes: 13 Page 1282, Entry 17 Pronounced dai. Shuowen Jiezi (Explanation of Simple and Compound Characters): Vinegar sauce. Yupian (Jade Chapters): Defined as water from washing rice. Guangya (Expanded Encyclopedia): Zai is synonymous with starch water. Book of Han (Hanshu), Treatise on Food and Money: When Lu Kuang discussed the liquor monopoly law, the standard measure of one hu was calculated by deducting the costs of rice and distiller's yeast. After calculating the profit, it was divided into ten parts; seven parts were submitted to the government, and the remaining three parts, along with distiller's grains, starch water, ash, and charcoal, were used to pay for tools, equipment, and firewood. Commentary: Shigu stated that zai is synonymous with starch water. Also, pronounced zai. The meaning is the same. Rites of Zhou (Zhouli), Offices of Heaven, Alcohol Administrator, third entry, note: Regarding zai slurry, zai means to contain. It refers to the merging of rice juices. Also, pronounced zai. Also, pronounced zui. The meaning is the same.