The time of steaming oysters has something to do with their shells. The cooking time of half-shell oysters is short, generally 5-7 minutes, while that of full-shell oysters is relatively long, generally about 10 minutes.

As a common economic cultured shellfish, oyster has long been recognized for its delicious and digestible medicinal and edible value. Dry meat contains 45%-52% protein, 7%- 1 1% fat and 0/9%-38% total sugar. In addition, it is rich in vitamins A, B 1, B2, D and G, and its iodine content is 200 times higher than that of milk or egg yolk. After concentration, it is called "oyster sauce"; Meat can be eaten fresh or made into dry products, that is, the traditional famous "oyster sauce".