Glacial acetic acid can be used as acidity regulator, acidulant, pickling agent, flavor enhancer, spice, etc. It is also a good antimicrobial agent, mainly due to its ability to lower the pH below the pH required for optimal growth of microorganisms.
Acetic acid is the earliest and most used sour agent in my country. It is mainly used for compound seasoning, wax preparation, canned food, cheese, jelly, etc. When used for seasoning, dilute acetic acid with water to 4%~5% solution and add it to various seasonings. Beverages made with vinegar as a sour agent and supplemented with pure natural nutrition and health products are called international third-generation beverages.