PROBLEM TO BE SOLVED: To provide a composition comprising silk peptide, water-soluble dietary fiber and carbohydrate, and a composition having an improved taste of carbohydrate, comprising silk peptide and water-soluble dietary fiber.SOLUTION: A composition for use as a bottled beverage or a powdered instant beverage comprises silk peptide, water-soluble dietary fiber and at least one carbohydrate selected from oligosaccharide and sugar alcohol, with a mass ratio of silk peptide to water-soluble dietary fiber in the range of 1:5000 to 0.01.SELECTED DRAWING: None