Can you eat oysters with black color inside?

The black part inside the oyster is the oyster's intestinal gland, which has a lot of black material that makes that part look black, and the black material is the undigested metabolites of the oyster, which are mainly seaweeds and some organic debris.

The oyster is a vegetarian mollusk, and the intestinal glands are made up of a variety of algae and do not contain any carrion, so they can be eaten.

But it should be noted that the oyster farming waters are not good, a variety of algae contaminated, eating oysters contaminated algae, intestinal glands have a lot of pollutants, consumption will affect the health of the body, this oyster is not recommended to eat black intestinal glands.

Extended information

Oysters inside the black stuff treatment:

1, those who do not mind can be in the oysters after the external cleaning directly after eating or cooking to eat.?

2, people who mind can remove the intestinal gland part of the oyster with a knife or other tools, and then rinse it with water before eating.?

3, or not eat the intestinal gland part of the food.