There are provided a flavor enhancing agent which is capable of selectively enhancing the flavor of a flavoring of interest, as well as a flavoring composition and a drink that contain the agent and which are enhanced in flavor. Specifically, a polymerized catechin is used with a flavoring.本發明係提供一種可使作為對象之香料的風味選擇性增強之風味增強劑及含有該劑之風味經增強的香料組成物及飲料。具體而言,係同時使用聚合兒茶素與香料。