It possesses CaSR agonisuto activity, searching many variation chemical compounds, it possesses body taste grant action and the body taste grant action of especially tip taste type are superior, at the same time is superior in stability and the simplicity and this the body taste whose it is possible to produce low at cost, is granted it discovers the substance which is produced, offer the body taste grant medicine which consists of the said substance, and the compound body taste grant medicine which consists of the said substance and the substance which possesses other CaSR agonisuto activity. Glu Nva (L gurutamiru L norvaline) jointly using the substance which possesses other CaSR agonisuto activity in the body taste grant medicine, and the said substance which consist of the compound body taste grant medicine which becomes.CaSRアゴニスト活性を有する多くのバリエーション化合物を探索してより優れたコク味付与作用、特に先味型のコク味付与作用を有し、かつ安定性に優れ簡便かつ低コストで生産することが可能なコク味を付与するこのできる物質を見出し、該物質からなるコク味付与剤、及び該物質と他のCaSRアゴニスト活性を有する物質からなる複合コク味付与剤を提供すること。γ-Glu-Nva(L-γ-グルタミル-L-ノルバリン)からなるコク味付与剤、及び該物質に他のCaSRアゴニスト活性を有する物質を併用してなる複合コク味付与剤。