"Qing Wu Town Records" said: "It is made of white rice, white flour and white water, so it has its name". Wuzhen people named rice wine "Sanbai" because its three main components: glutinous rice, distiller's yeast and underground water are white. This wine is mellow, pure, sweet and delicious, suitable for men, women and children. Sanbaijiu takes glutinous rice as the main raw material. When brewing, first cook glutinous rice into rice, put it in a clay pot and cool it with cold water. Mash the koji cake and mix it evenly into the rice. Then pour the rice into the jar, flatten it, dig a small pool in the middle, then cover the jar and seal it, and cover it with straw or cotton wool to keep warm. A few days later, if the Tan Xiao in the middle of the cylinder is full of wine slurry, you can pour cold boiled water into the cylinder, subject to the submerged rice, then seal the cylinder head and cover it. After a week, open the lid and put it into a steaming barrel for distillation, so that after two steaming and two brewing, the wine is made.

The origin of Sanjiu wine is said to be related to a dutiful son. When the dutiful son was helping others, the boss gave him two zongzi as snacks. He couldn't bear to eat alone and wanted to leave it to his mother, so he hid Zongzi in an old tree hole and pulled out a handful of grass to cover it. Then it suddenly began to rain, and the dutiful son left in a hurry and forgot to take zongzi. Come to Tiantou again, palm seed has been soaked in rain and grass juice. Because he was too poor, the dutiful son took these two soft brown sons home for his mother to eat. Unexpectedly, after peeling off the shell, it immediately exudes a burst of fragrance and tastes surprisingly good. When the mother asked what was going on, the son replied that it was covered with a layer of grass. It turns out that this is a wine herb that can ferment rice. Later, the mother and son used the grass and flour to make cakes and brew sweet white wine. Slowly, this method of brewing spread. Because the three main ingredients are all white, it is called Sanjiu wine.