The French use a drop of lemon juice on the opened oyster to assure themselves that it is still alive and fresh by watching the muscular reaction to the acidic lemon. If it is not convenient to serve the oysters immediately upon opening, they can be refrigerated up to three days without any significant deterioration in condition or visual appeal. Opened oysters are perishable like any other type of fresh fish, and should not be kept without refrigeration or refrozen once thawed. Oysters in your Diet Folk lore indicates that Sydney rock oysters have significant aphrodisiac effects. Whether this is fact or fiction is for you to determine.
Few foods can compare with oysters in terms of their nutritional value.
Sydney Rock oysters are well below the cholesterol levels found in red meats and duck.