Wash and dry the sealed bottle to ensure that it is oil-free, water-free and clean. Put fresh edible rose petals directly into a sealed bottle.

2. Add old rock sugar.

3. Slowly pour the rice vinegar into the bottle.

4. Cover tightly and leave it for about one month before drinking.

Vinegar should be diluted with water before drinking (the ratio is 1: 10), or it can be diluted and mixed with honey before drinking. It tastes sour and sweet.