King Trumpet mushrooms are medium to large in size and are easily identified by their thick cylindrical stem and their small, flattened cap. The ivory to white stems can grow up to twenty centimeters in length, five centimeters in diameter, and are firm, dense, and chewy. The small, smooth caps are grey to brown and have rounded, curved edges. Underneath the cap, the stem and cap are joined by off-white, thin, short, gills. Raw King Trumpets, though dense and spongy in texture, lack aroma and flavor, but when cooked, the mushrooms have a savory umami flavor, a soft, crunchy texture, and a mild flavor reminiscent of abalone.