Fecha de publicación: 19/04/2023 Fuente: WIPO "olive oil" The present disclosure addresses the problem of developing a method for improving the persistence of flavor upon placing a food/beverage product in the mouth. The present disclosure is an agent for improving the persistence of flavor of a food/beverage product, said agent using polyglycerol polyricinoleate as an effective ingredient. In addition, the present disclosure is: said agent for improving the persistence of flavor of a food/beverage product, wherein the degree of polymerization of polyglycerin in said polyglycerol polyricinoleate is 2-10; said agent for improving the persistence of flavor of a food/beverage product, said food/beverage product having a sweet and/or salty flavor; and said agent for improving the persistence of flavor of a food/beverage product, said food/beverage product containing an edible oil/fat.