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Prepare the oysters for steaming. Prepare the steaming liquid. Steam the oysters for approximately 5 minutes. Alternately, steam oysters on a roasting dish in a grill.
Scrub the outside of the shells with a scrub brush under cold, running water to remove all dirt. Discard any open or cracked shells, since this is a sign of a dead or compromised oyster. Do not wash your oysters far in advance of eating them. Washing your oysters hours before you plan on steaming them may kill them: Chemicals such as chlorine and poisons such as lead may leave your oysters tasting less fresh than they might otherwise be. Pour 2 inches (5.06 cm) of water into a pot. Add a half glass of the beer or a glass of wine to the water for a bit of flavor and aroma. Place a metal steamer tray or colander into the pot to hold the oysters. Arrange the oysters on the tray or colander. Bring steaming liquid to a boil and then cover the pot with a lid. Turn the burner to medium-high and allow the oysters to steam for 5 to 10 minutes 5 minutes for a medium-cooked oyster, 10 for a well-done oyster. At this point, most of the oysters should have opened. Discard any oysters that did not open. Lay your oysters out evenly on an old roasting dish that's filled with a little bit of water. Set your burner to medium-high heat, cover your grill, and let cook for 5-10 minutes. Oysters are done when their shells open. Discard any oysters that didn't open during the cooking process.