Disclosed is a beverage composition characterized by containing an acidic soluble protein and one or more powdery or granular salts selected from alkali metal salts of organic acids and water-soluble basic salts. The beverage composition is also characterized in that at least the acidic soluble protein is granulated. Also disclosed is a method for producing an acidic soluble protein-containing beverage composition, which is characterized in that 0.01-10 parts by weight of one or more powdery or granular salts selected from alkali metal salts of organic acids and water-soluble basic salts is added per 100 parts by weight of an acidic soluble protein, and at least the acidic soluble protein is granulated. The beverage composition is suppressed in lump formation when dissolved in water.
