White Elm Oyster mushrooms, also known as Pleurotus ostreatus var. ostreatus, are a species of edible mushrooms that thrive on hardwood trees. They have a delicate flavour and a pleasant texture, making them a popular choice in various dishes. These mushrooms are typically found in clusters and have a fan-shaped cap that is white to light cream in colour. They are commonly used in stir-fries, soups, and pasta dishes.