2. After refilling with clear water, pour salt water or vinegar and let it stand for about 2 hours to let the crayfish spit out dirty things. Moreover, salt water or vinegar water can effectively kill parasites and bacteria on the surface of crayfish.
3. Then find a clean toothbrush or small brush.
4. The dirtiest place of crayfish should be the abdomen, because there are many folds in the abdomen, which are easy to get dirty and difficult to clean. So you can choose a brush and scrub the crayfish's abdomen hard. Note: If you have gloves, you'd better wear rubber gloves to avoid hurting your hands.
5. Brush the belly of the crayfish repeatedly and brush it several times until the brushed water becomes clear until you can see the blue shrimp meat.
6. The head of crayfish contains the most heavy metals, because most of the internal organs of crayfish are concentrated in the head, so the head of crayfish should be removed before eating.
But the shrimp yellow of crayfish is also in the head, so when dealing with the head of crayfish, it is best to leave the shrimp emperor behind. When you cut the lobster head, you should cut it off at a 45-degree angle, and then leave the yellow part of the shrimp.
7. The intestines of crayfish will also be dirty, so it is necessary to remove the intestines (shrimp line) of crayfish.
The method is simple: grab the two parts in the middle of the lobster tail, twist it left and right, then hold the tail in the middle of the shrimp tail, gently rotate it and slowly pull out the shrimp line. So the crayfish are cleaned up.