1. There is a lot of soil and impurities on the ground vegetables. You can choose to wash them a few more times. The impurities will be less each time you wash them. They can be washed clean after four or five times. It is best to use warm water.

2. Use light salt water to clean directly. Light salt water has a strong sterilization ability. Put the ground vegetables in light salt water and soak them for about 15 minutes, and all impurities will be removed.

3. Wash with flour. Flour has a strong adhesion ability. You can sprinkle flour on it when cleaning and slowly scrub it clean.