King oyster mushrooms, also known as King Eryngii, are a large, meaty mushroom prized for their unique texture and rich, savoury flavour. They are a popular choice in both vegan and non-vegan cuisine, often compared to scallops or steak due to their firm, dense flesh. 

They are the largest of the oyster mushroom family, with a thick, white stem and a small, tan cap. King oyster mushrooms have a rich, savory umami flavor with subtle smoky undertones. They are known for their meaty, firm texture, which holds up well during cooking.