1. Scrub the fish with flour, wipe off the mucus on the fish, and then wash it off with clear water.

2. Sprinkle half a tablespoon to one tablespoon of coarse salt evenly on the fish, scrub it hard, then sprinkle a proper amount of raw powder, stick the mucus on the fish, wipe it off, and then rinse it with clear water.

3. scald it with boiling water before cleaning.

4. Sprinkle some salad oil on your hands and rub it evenly on the fish. Pay attention to both inside and outside, especially the cheeks on your head. It is easy to wash again.