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Vinegar is a fermented sour liquid condiment, which is mostly made of glutinous rice, sorghum, rice, corn, wheat, sugar and alcohol. Vinegar was called "Qiang" in ancient times, and the word "Qiang" appeared before Zhou Dynasty. There is already a "Qiang Ren" in the Zhou royal family, which is responsible for the supply of Qiang in the royal family, but it is still used in Japan.

According to legend, in ancient times, vinegar was invented by Heita, the son of wine saint Du Kang. Du Kang invented wine, and his son Heita did everything in the workshop, carrying water and vats, and gradually learned the technology of brewing. Later, Black Tower felt it was a pity to lose the distiller's grains after making wine, so it was stored and soaked in the jar. On 2 1, as soon as I opened the jar, a smell that I had never smelled before came to my nose. Under the temptation of rich fragrance, Heita tasted it, which was sweet and sour, so it was stored as a "sauce".