1. Descaling methods can be divided into raw beating and cooked beating. Beating is scraping scales after killing. Cooked descaling is to blanch the slaughtered fish in boiling water, and then scrape off the scales. The advantage of this treatment is that the skin is clean and the shape is beautiful, but the disadvantage is that it will affect the smoothness of the fish.

2. Clean the fish with vinegar before scraping the scales, and then scrape, saving time and knife. You can use a beer bottle cap or a knife back when scraping fish scales, which is fast and safe.