Old vinegar. Vinegar is stored for a long time after it matures. Dark brown, clear liquid, mellow vinegar taste, less precipitation, long storage time, not easy to deteriorate and so on.
The origin of vinegar
It is said that a man named Du Kang invented wine in Yuncheng area. His son Heita also learned wine-making technology from Du Kang. Later, Heita led the clan to move to Zhenjiang, Jiangsu.
There, they felt it was a pity to throw away the distiller's grains after brewing, so they stored them and soaked them in jars. 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". What is the name of this sauce? Heita named this sour water "vinegar" and added the word "one" to the number 2 1.