Why Are Open Oysters Bad

The oyster is gaping open, which means it is weak or dead. The oyster is dry, which means it is weak, injured or dying.

How long are open oysters good for?

Once opened, oysters will keep for up to 7 days in the fridge, but be aware: they will absorb any strong flavours (for example rock melon and onion tend to taint the flavour, no matter how well packed your oysters are).

What if an oyster is slightly open?

Unless they have been shucked and frozen, oysters should be alive when you buy and cook them. If the shell is tightly closed, it is still alive. If the shell is slightly open, it should close promptly when tapped. If the shell is open and does not close when tapped, throw it out.