1. Clean the crayfish and pour an appropriate amount of salt and white vinegar into the water.

2. Put the crayfish into the mixed water. After 15 minutes, you will see a lot of sediment in the water. This is the sand spit out by the crayfish.

3. After taking out the crayfish, rinse it two to three times, and then use a thin brush to clean the abdomen of the crayfish.

4. Then use scissors to cut off part of the head, hold its tail with your hands, twist it, and slowly pull out the black line on the back of the shrimp. At the same time, peel off the shrimp feet and gills.

5. Complete the above steps and wash it one last time.