The Elm Oyster mushroom, also known as the Hypsizygus ulmarius, is a type of edible mushroom that is native to North America and Europe. It is a medium-sized mushroom with a thin, oyster-shaped cap that is typically white or pale brown in color. The mushroom has a delicate, tender texture and a mild, slightly sweet flavor. It is a popular choice for grilling, sautéing, and roasting, and can be used in a variety of dishes to add flavor and texture. The Elm Oyster mushroom pairs well with a variety of ingredients, and can be used in soups, stews, and sauces to add depth and richness. It is also a good source of protein and fiber, making it a healthy choice for any meal.