2. The implementation standard of high-quality vinegar is GB 18 187, which is the national food standard number of fermented vinegar.
3. The total acidity is high. Generally speaking, the higher the acetic acid content, the better. For example, in the column of total acidity, 6% vinegar is better than 3% vinegar. High total acidity not only means more mellow acidity, but also shows that it is more resistant to bacterial pollution and easier to store.
4. Strong texture and strong color. For aged vinegar products without thickener and caramel pigment, the folk experience of "the heavier the color, the better the vinegar" is still applicable. Because of the precipitation of nutrients, it is normal to have a little precipitation over a long period of time.
Matters needing attention in edible vinegar
Proper dosage: vinegar has many functions. Some people like to be jealous in their daily eating habits, but it's no use eating too much vinegar. Generally speaking, under normal circumstances, it is advisable for adults to consume 20-40 ml of vinegar every day, not exceeding 100ml. Besides, they should rinse their mouths at any time after being jealous to avoid damaging their teeth.
Some people are not suitable for jealousy: vinegar has many health functions, but for some users, it is not suitable for eating, and people with stomach problems are not suitable for drinking vinegar directly. It is not recommended to be jealous after taking some medicine. Sulfanilamide drugs are easy to form crystals in acidic environment, which will damage the kidneys. When taking alkaline drugs such as sodium bicarbonate, magnesium oxide and composite aluminum hydroxide, vinegar will counteract the effects of the drugs.
The above contents refer to Baidu Encyclopedia-Vinegar, People's Network-Health Knowledge: Seven Criteria for a Good Vinegar.