Bunashimeji mushrooms, also known as beech mushrooms, grow in tight clusters with slender white stems and small, dome-shaped caps that range from pale beige to light brown. When cooked, they develop a tender bite and release a deep, savory flavor with nutty and mildly sweet undertones. Raw, they are slightly bitter and best enjoyed sauted, roasted, or added to soups and stir-fries. Popular in Japanese and other Asian cuisines, Bunashimeji mushrooms add texture and depth to a wide range of hot dishes.