The king oyster mushroom is a type of edible fungus that is commonly used in culinary dishes. It has a large, flat cap that can reach up to 10 inches in diameter, and its flesh is thick and meaty with a mild, slightly sweet flavor. The mushroom is often grilled or sautéed and served with other vegetables or as a side dish. Some customers have noted that the price of king oyster mushrooms can be higher than other mushroom varieties, but its unique taste and texture make it a popular choice for chefs and foodies alike.