What is vinegar made of? What is vinegar made of?

1. Raw materials of traditional fermented vinegar in China: glutinous rice and rice (japonica rice) are the main raw materials in the south, sorghum and millet are the main raw materials in the north, wheat is the main raw material in the Central Plains, and wheat bran is mostly used in Sichuan and Shaanxi. At present, there are many substitutes such as broken rice, corn, sweet potato, dried sweet potato, potato and dried potato. Raw materials are cooked, gelatinized, liquefied and saccharified to convert starch into sugar, then ethanol is produced by yeast fermentation, and then ethanol is oxidized by acetic acid bacteria to produce acetic acid.

2. Vinegar is a traditional condiment in major cuisines in China. According to documents, the history of fermented vinegar is over 3000 years. Generally, it can be divided into solid fermented black vinegar, liquid fermented red vinegar and white vinegar. Vinegar is mainly fermented from glutinous rice, wheat and sorghum. It contains amino acids, lactic acid, organic acids and other components. Famous vinegars in China include Zhenjiang balsamic vinegar, Shaanxi mature vinegar, Sichuan Baoning vinegar and Tianjin Liu Du mature vinegar.