About 15-20 minutes.

According to Baidu Wenku query, the cooking time of conch varies depending on the size of the conch and the cooking method. Generally speaking, sea snails need to be cooked for about 15-20 minutes before they are fully cooked. Here are some suggestions for cooking conch:

1. Wash the conch with clean water and remove the tail and internal organs.

2. Put the conch into the pot, add an appropriate amount of water, and the water surface should not exceed the conch.

3. After the high heat comes to a boil, turn to low heat and cook for about 15-20 minutes until the conch is cooked.

4. Take out the conch, rinse it with cold boiled water, drain it and eat it.