1. High-quality vinegar is brown-red or brown in color (white vinegar is a colorless clear liquid), clear, and has no suspended solids and sediments. Poor-quality vinegar is darker or lighter in color, turbid, and should be stored There will be sediment for a period of time

2. High-quality vinegar has a strong vinegar aroma, while poor-quality vinegar has a lighter taste; dip a chopstick into the vinegar and put it in your mouth. The acidity is moderate, with a slight sweetness, and it does not stick to your throat. The kick is good vinegar.

3. If the color of the white vinegar is yellow or other colors, some yellow white vinegar indicates that it is brewed from grain and its nutritional value is higher than that of white vinegar containing glacial acetic acid.

Extended information

1. Flavor and smell: Brewed vinegar has obvious four flavors of sour, sweet, fresh and fragrant, and the sour taste is soft, while prepared vinegar has no obvious sweet and fresh flavors. , fragrant flavor, and the sour taste is highly irritating;

2. Color and form: Brewed vinegar has dark brown, brown, amber, etc. depending on the variety. It is shiny, clear in appearance, and has no suspended matter. And precipitation, brewing vinegar that has been left for a long time may appear cloud-like precipitation (but it does not affect consumption). The prepared vinegar is purely an aqueous solution of acetic acid. Its appearance is very clear and transparent, but has no luster. It is not as prone to mold and deterioration as brewed vinegar, and it will not become turbid or precipitated after being left for a long time.

Baidu Encyclopedia-Vinegar

Baidu Encyclopedia-White Vinegar