Provided is a beer flavored beverage containing the non-polymer catechins at a high concentration but having bitterness and refreshing finish suitable for the beverage to have a beer taste and suppressed astringency. The beer flavored beverage containing the non-polymer catechins according to the present invention comprises the following components (A), (B), (C), and (D): (A) from 0.03 to 0.4 mass % of the non-polymer catechins; (B) a malt extract; (C) from 0.0005 to 0.06 mass % of potassium; and (D) from 0 to 2.8 mass % of an alcohol, in which: a mass ratio ((C)/(A)) between the component (A) and the component (C) ranges from 0.003 to 1.2; and a quantitative ratio between the component (A) and the component (D) satisfies a relationship represented by the following expression (1):0≦(d)≦3−6.5×(a) (1) (in the expression (1), (a) and (d) represent a mass fraction (mass %) of the component (A) and a mass fraction (mass %) of the component (D), respectively).