To search a number of variation compounds having a CaSR agonist activityin order to obtain a substance having a more excellent kokumi-impartingfunction, and more particularly to provide a kokumi-imparting agent, whichcontains the foregoing substance, and a composite kokumi-imparting agent,which likewise contain's the aforementioned substance and anothersubstance having a CaSR agonist activity as well, in combination. akokumi-imparting agent comprises a lanthionine derivative and a compositekokumi-imparting agent comprising the lanthionine derivative and anothersubstance having a CaSR agonist activity.
