1. Boil the shrimps and crawfish for about 8 minutes. The cooking time of the crawfish should not be too long. If it is too long, the shrimp meat of the crawfish will shrink and become empty, and the meat quality will become firewood, which will affect the taste.

2. First, prepare the ingredients: shrimp, ginger, salt, onion and star anise. Boil the crawfish in water: first prepare the crawfish, ginger, salt, onion and star anise, then put the crawfish in a pot and soak it in water. Soak for 2 minutes, then put the water into the pot, add onion and ginger, add star anise, and then add salt. After the water is boiled, put in the shrimp crawlers, cover the pot and cook for 8 minutes, so that the shrimp crawlers can be boiled in water.