1. Put the cut grapes into a fruit bowl and add 1-2 tablespoons of flour in the bowl, which is the flour commonly used at home.

2. Add water, the amount of water should completely submerge the grapes. Gently shake the fruit bowl or gently stir the water with your hands to mix the flour and water well.

3. Soak the grapes in the flour water for about 5 minutes, then remove the grapes and place them in a fruit sieve.

4. Rinse the grapes under running water.

Before cleaning:

1. Use scissors to cut the grapes one by one along the end. This avoids damage to the skins of the grapes from hand-picking and allows for the best preservation of the integrity of the grapes, as well as avoiding internal contamination of the pulp during cleaning.

2. Cut as many grapes as you can eat. Wrap the remaining grapes in paper and put them in the refrigerator. Because the grapes are easy to deteriorate after washing and not eating, even after washing and putting them in the refrigerator to freeze, they can only be kept for two or three days. Putting plastic bags in the refrigerator will frost the surface of the grapes, causing the fruit to crack and rot.

After cleaning:

1. After the grapes are cleaned, if you are still worried that the water is not hygienic, rinse with pure water.

2. If you do not eat immediately after cleaning, use a clean towel laid flat on a flat surface, place the grapes on the towel, use the towel to quickly dry the water on the grapes, and place them in a clean, waterless container.