The purpose of the present invention is to reduce the harsh taste due to the potassium in a colorless transparent beverage that contains potassium. Lactose and/or at least one type of oligosaccharide is added to this colorless transparent beverage which contains potassium.本發明之課題為在含有鉀之無色透明飲料中,減輕來自鉀之苦澀味。於含有鉀之無色透明飲料中摻混乳糖及/或至少1種寡糖。