An object of the present invention is to provide an alcoholic beverage or a beer-flavored beverage, each of which is well balanced in terms of flavor such as mellowness and savor, body (robustness and richness), and sharpness, and the deterioration smell of which generated during storage is improved. The method of producing an alcoholic beverage or a beer-flavored beverage, comprising adding an auxiliary material containing rare sugar or rare sugar syrup made from HFCS in the production of an alcoholic beverage or a beer-flavored beverage. The auxiliary material containing a rare sugar is that contains at least D-psicose, D-allose, or both D-psicose and D-allose.
