The deodorization method of Duobao fish is 1: wash the fish and put it in cold water, then pour a small amount of vinegar and pepper into the water, so that the treated river fish has no earthy smell.

Method 2: Soak the live fish in the salt water with half salt and 5 kg water, and the salt water will be immersed in the blood through the cheeks, and the earthy smell will disappear after one hour. If it is a dead fish, soak it in salt water for two hours to remove the earthy smell.

Method 3: When killing fish, the blood of the fish can be washed as clean as possible, and seasonings such as onion, ginger and garlic can be added when cooking, which can basically remove the earthy smell.