PROBLEM TO BE SOLVED: To provide a beer taste beverage in which a rising flavor is strong, a volume feeling is enhanced, and mildness is improved, a method for producing the beer taste beverage, and a method for improving the flavor of the beer taste beverage.SOLUTION: Provided is a beer taste beverage in which, provided that the content of acetaldehyde is defined as Xmg/L and the content of isoamyl acetate is defined as Ymg/L, the value of the X is 1.0 to 5.0, the value of the Y is 2.0 to 8.0, and the value of the Y/X is 0.4 or more. Also provided is a method for producing the beer taste beverage comprising a process where the value of the X is controlled to 1.0 to 5.0, the value of the Y is 2.0 to 8.0, and the value of the Y/X is controlled to 0.4 or more. Also provided is a method for producing the flavor of the beer taste beverage where the value of the X is controlled to 1.0 to 5.0, the value of the Y is controlled to 2.0 to 8.0, and the value of the Y/X is controlled to 0.4 or more.SELECTED DRAWING: None【課題】立香が強く、ボリューム感が増強され、穏やかさが向上したビールテイスト飲料、ビールテイスト飲料の製造方法、及びビールテイスト飲料の香味向上方法を提供することを課題とする。【解決手段】本発明に係るビールテイスト飲料は、アセトアルデヒドの含有量をXmg/L、酢酸イソアミルの含有量をYmg/Lとした場合、Xの値が1.0~5.0であり、Yの値が2.0~8.0であり、Y/Xの値が0.4以上である。本発明に係るビールテイスト飲料の製造方法は、Xの値を1.0~5.0とし、Yの値を2.0~8.0とし、Y/Xの値を0.4以上とする工程を含む。本発明に係るビールテイスト飲料の香味向上方法は、Xの値を1.0~5.0とし、Yの値を2.0~8.0とし、Y/Xの値を0.4以上とする。【選択図】なし