1. Rinse the whole bunch of grapes in cold boiled water several times, pick them up, put them in a clean vegetable basket, and dry the surface moisture.

2. Crush the whole grape, put it into a glass bottle, put half of the grape into the glass bottle, pour a proper amount of rock sugar into the jar, and cover the grapes in the jar.

3. Crush the other half of the grapes and put them in a glass bottle. The volume of grapes should not exceed 8/ 10 of that of glass bottles.

4. Seal the glass bottle with a stopper or plastic cloth and place it in a cool and dark place for aerobic fermentation.

5, the time is self-determined, you can start tasting when you see the color change, and you can carry it with you.