Oysters with shells: Steam them for 5 to 7 minutes. Oysters without shells: Steam them for about 3 minutes and they will be cooked.

Oysters steamed by yourself are generally whole-shell oysters. The shell of the oyster is hard and has few gaps, so it cannot be in good contact with water vapor. The steaming time will be longer, but generally the oyster will open in about 7 minutes. At this time, the oyster has just matured and tastes fresh and juicy. If you like a more familiar person, you can extend the time to 10 minutes.