King Oyster Mushrooms, or Eryngii, are the largest of the oyster mushroom family, prized for their thick, meaty white stem rather than their small cap. They have a firm, dense texture and a rich, savory, umami flavor that is exceptionally versatile. Their robust structure allows them to be sliced into rounds and pan-seared like scallops, or grilled, or roasted. A favorite among chefs for its texture and flavor.