Fecha de publicación: -- Fuente: WIPO "tomato" Provided is a umami and/or saltiness enhancer capable of enhancing umami and/or saltiness of a food or beverage product. In addition, provided is a food or beverage product, such as a food, beverage, and seasoning, containing the umami and/or saltiness enhancer and having enhanced umami and/or saltiness due to a umami-enhancing effect thereof.The umami and/or saltiness enhancer for a food or beverage product, contains ergothioneine as an active ingredient, in which a food or beverage product having enhanced umami and/or saltiness is obtained by causing ergothioneine to be contained in an amount of 0.005% by weight or more relative to a content of a single umami component in the food or beverage product.