The black inside of the oysters looks like shit and is edible.

The black shit-like things inside oysters are oyster organs and some metabolites. The environment of oysters is usually relatively clean. Oysters daily feed on natural seaweed and phytoplankton in the sea. The black and green lump is actually the digestive organs of the oyster and the state of the food that has not yet been digested.

The black shit-like stuff inside oysters is actually not toxic and contains rich nutrients. It is harmless to the human body after eating. If you don’t want to eat it, you can pick it out and discard it. .

How to identify fresh oysters

1. Smell: It should be noted that fresh oysters should have a marine smell, while stale oysters should smell fishy.

2. After opening the shell: After the fresh oyster is opened, the meat is plump and the juice is sufficient; the rotten oyster meat is shriveled, smelly, and does not have much juice.

3. Check whether it is closed: the entire oyster is tightly closed without any gaps. If you find that the mouth is slightly open, press the oyster's shell. If it closes, the oyster is still alive. If there is no reaction, you can just throw it away.

Reference for the above content? Baidu Encyclopedia-Oyster