Answer: Fresh shellfish or frozen food can easily deteriorate and go bad if not properly handled and stored. Therefore, frozen food should be stored in the refrigerator as soon as possible after purchasing it home. Fresh fish and shellfish must be properly pre-processed before being stored in the refrigerator. The method of processing fish is to first remove the gills, internal organs and fish scales, wash them thoroughly with tap water, then cut and package them according to the amount of each meal, and finally put them in the refrigerator in sequence for storage. For shrimps, you can remove the grit first, wash them, dry them with a dry cloth, add MSG and egg whites, potato starch, and salad oil, and store them in the refrigerator. For shelled shrimps, just clean the outside. Freeze or refrigerate. Crabs are the same. After buying the mussel shells, wash them with clean water first, then put them in a basin filled with clean water and add a tablespoon of salt to spit out the sand. Frozen scallops, peacock clams, etc. can be sent directly to freezing or refrigeration.