(Scientific Name: Pleurotus eryngii
) A variety of mushroom that grows in clusters developing a trumpet-like shape and appearance as a wild or cultivated mushroom. With a blunt cap above and a stout stem beneath, the King Oyster mushroom develops a thick, white flesh that is firm-textured and meaty from the base to the cap. Also referred to as the King Eryngii, Eringii or Royal Trumpet and a trademarked variety known as Trumpet Royale, this mushroom receives some of its names from its shape. The King Oyster is typically harvested when the stems reach a length of several inches, but can grow to a size of 6 to 8 inches in length. As the mushrooms age for several days and depending on the storage provided, the flesh may darken or turn slightly tan to brown in color, but the quality of the mushrooms should be unaffected.
When preparing, this mushroom can be braised, broiled, grilled, sautéed, or stewed to be added to soups, stews, sauces, pasta, vegetable dishes, meats, and seafood. If prepared whole, allow a longer cooking time for this meaty mushroom, cooking it until it is nicely browned. When storing, place in a paper bag and refrigerate for use within 10 days. If necessary, Matsutake mushrooms can be used as a substitute.