The present invention provides a beverage comprising: (a) 0.05 to 10% by weight (wt %) of a chlorogenic acids family mixture comprising isochlorogenic acids(s) family wherein the weight content of said isochlorogenic acid(s) ranges from 1/20 to 1/3 of the total ingredient (a); (b) hydroxycarboxylic acid(s) in a quantity ranging from 5 to 30 times the weight content of said ingredient (a) and from 0.25 to 10 wt % of the beverage, and/or vegetable-derived or fruit-derived flavor substance(s) in a quantity ranging from 0.1 to 30 times the weight content of said ingredient (a) and from 0.25 to 10 wt % of the beverage; and (c) 30 to 99.7 wt % of water. The present invention provides a flavorous beverage having a stable antihypertensive action and long-term storage stability.