Thorough cooking destroys Vibrio vulnificus. Proper storage and cooking of shellfish can prevent Vibrio vulnificus infections. Use small pots to boil or steam oysters. Do not cook too many oysters in the same pot because the ones in the middle may not get fully cooked. Discard any oysters that do not open during cooking.
Steam live oysters four to nine minutes in a steamer that is already steaming.
Fry in oil for at least three minutes at 375 degrees Fahrenheit. Broil three inches from heat for three minutes. Bake for ten minutes at 450 degrees Fahrenheit. When buying fresh oysters, always make sure they are alive. The shells should be tightly closed or should close when tapped lightly.