A METHOD FOR SCREENING FOR A KOKUMI-IMPARTING SUBSTANCE, WHICH UTILIZES CALCIUM RECEPTOR ACTIVITY AS AN INDEX, A KOKUMI-IMPARTING AGENT CONTAINING A KOKUMI- IMPARTING SUBSTANCE OBTAINED BY THE SCREENING METHOD AS AN ACTIVE INGREDIENT, A METHOD FOR PRODUCING FOOD OR DRINK SUCH AS FOOD, SEASONING, AND DRINK IMPARTED WITH KOKUMI, AND FOOD OR DRINK IMPARTED WITH KOKUMI.