Chestnut Royale mushrooms are small to medium in size, grown as a single stem or in small groups, and have a convex cap that is attached to a thick, dense stem. The brown to grey-brown cap can grow 2-15 centimeters in diameter and is smooth, velvety, and slightly slimy when wet and young. As the mushroom ages, it will dry and become wrinkled. The gills underneath the cap are bright white to cream-colored and are evenly spaced connecting to the central, brown stem that narrows near the cap and averages 5-10 centimeters in length. Chestnut Royale mushrooms have a clean, woodsy aroma, a meaty texture, and when cooked, they have a rich, nutty, and mildly sweet flavor.
