Luckily, it's not hard to tell if your oyster mushrooms have gone bad. It will develop a wet, slimy surface and look darker in color. If the mushrooms are just starting to get a bit off, you can quickly cook them to extend their life in the fridge, but if they've gone full slime, it's time to say goodbye.Dec 31, 2020
Is there a fake oyster mushroom?
Phyllotopsis nidulans is a member of the Tricholomataceae family. The Mock Oyster was once placed in the genus Pleurotus, the true edible oyster mushrooms, and it is a convincing look-alike. Don't be fooled though, this species may be non-toxic, but Phyllotopsis nidulans is distinctly lacking in culinary value.Jan 9, 2012