PROBLEM TO BE SOLVED: To provide a beer taste beverage that has excellent rich taste, a method for producing a beer taste beverage in which the rich taste is enhanced, a method for enhancing the rich taste of a beer taste beverage, and a rich taste enhancing agent for beer taste beverage.SOLUTION: Provided is a beer taste beverage in which the content of the real extract (R-Ex) is 3.8 w/w% or more, and the ratio of the content of wheat-derived protein having a molecular weight of 35 to 50 kDa to the content of R-Ex (35 to 50 kDa protein (ppm)/R-Ex (w/w%)) is 11 or more. Also provided are a method for producing beer taste beverage, including a step of increasing the content of a wheat-derived protein having a molecular weight of 35 to 50 kDa, and a method for enhancing the rich taste of a beer taste beverage, including a step of increasing the content of a wheat-derived protein having a molecular weight of 35 to 50 kDa.SELECTED DRAWING: Figure 1COPYRIGHT: (C)2020,JPO&INPIT【課題】コク味に優れるビールテイスト飲料、コク味が増強されたビールテイスト飲料の製造方法、ビールテイスト飲料のコク味を増強する方法、及びビールテイスト飲料のコク味増強剤の提供。【解決手段】真正エキス分（Ｒ-Ｅｘ）の含有量が３.８ｗ/ｗ％以上であり、Ｒ－Ｅｘの含有量に対する分子量３５～５０ｋＤａの麦由来タンパク質の含有量の比率（３５～５０ｋＤａタンパク質（ｐｐｍ）/Ｒ－Ｅｘ（ｗ/ｗ％））が１１以上である、ビールテイスト飲料。また、分子量３５～５０ｋＤａの麦由来タンパク質の含有量を増やす工程を有する、ビールテイスト飲料の製造方法、及び分子量３５～５０ｋＤａの麦由来タンパク質の含有量を増やす工程を有する、ビールテイスト飲料のコク味を増強する方法。【選択図】図１
