Practice:

Pour one kilogram of white rice vinegar into a container that is acid- and alkali-resistant and well sealed. Peel and slice one catty of apple; put one layer of apple and one layer of rock sugar (or honey) into the rice vinegar. You need 4-6 taels of rock sugar for one kilogram of apples.

Put the packed ingredients in a cool place and drink it after a week. Drink only the juice, not the apples.

Drink the juice with three times cold water. Homemade apple cider vinegar does not contain preservatives and other additives, is natural and has high nutritional value.