To provide a polyphenol-containing raw material in which bitter taste and astringent taste are reduced by using a substance that specifically adsorbs the polyphenol without restriction on an acceptable intake amount.SOLUTION: The present invention discloses a method for producing a solid polyphenol-containing gelatin with reduced bitterness and astringency by using an extract of solid polyphenol or a plant containing polyphenol as raw material, the method comprising a step of adding solid gelatin to an aqueous polyphenol-containing aqueous solution under heating and mixing, thereby making the solid gelatin absorb the aqueous polyphenol.SELECTED DRAWING: None
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