2. Pick the shrimp line. The head of the shrimp is a three-in-one part of the head, chest and nail, and its stomach, liver and other internal organs are concentrated here. After peeling the shrimp shell, you can see a black line on the back, that is, it is more convenient to use a toothpick in the intestine of the shrimp. Poke it on the back of the shrimp and then pick it up, so that it can be picked out. When picking, you should use force evenly to prevent it from being broken. If you don't pick it clean, you can pick it again at the back.
3. The head and intestines of shrimp are inedible, mainly for the sake of preventing bacterial infection. Just cut off the head, which is easier to handle.
4. Cook in the pot. Put water in the pot, pepper and lemon slices in it, and salt and ginger slices. Mainly to remove fishy smell.