Blue Oyster Mushrooms, scientifically known as Pleurotus ostreatus var. columbinus, are a type of edible fungi characterised by their blue-grey caps and tender texture. They thrive in temperate climates and are typically cultivated on substrates like straw or wood. These mushrooms have a delicate, slightly sweet flavour and are commonly used in various culinary dishes, including stir-fries, soups, and pasta. Rich in nutrients, they provide a good source of protein, fibre, and essential vitamins.