Th e umami taste is a kind of taste attribute remarkably diff erent from the traditional four tastes. Th e addition of umami substances such as mushrooms will change the taste characteristics of the food. Not only the umami taste but also other sensory characteristics such as continuity, mouth fullness, impact, mildness, and thickness will be increased. Overall, they increase the palatability of foods. Th e EUC values of commercially available mushroom fruit bodies and mycelia summarized herein are valuable for their further use as foods or food-fl avoring materials and in the formulation of health foods.