1. Use scissors to cut off the grapes or grapes one by one, and then put them in the pot.
2. After cutting off the grapes or grapes, put them in a basin and rinse them with water.
3. Add a spoonful of salt, then add 2 spoons of flour, and add water to cover the grapes.
4. Gently scratch and wash the grapes in one direction with your hands. After scratching and washing, rinse them with clean water several times, so that you can eat them with confidence. Wash the grapes in the same way.