PROBLEM TO BE SOLVED: To provide a method for producing a coffee composition for dilution with a high solid content concentration while suppressing the generation of hydroxyhydroquinone.SOLUTION: A method for producing a coffee composition for dilution has a first step for storing a raw material roasted coffee bean in a closed vessel and heating it under a humidification condition at 100-160°C for 0.5-4 hours, and a second step for extracting the roasted coffee bean obtained by the first step under a pressurization condition of 0.1-1.5 MPa in terms of gage pressure at 110-170°C.SELECTED DRAWING: NoneCOPYRIGHT: (C)2017,JPO&INPIT【課題】ヒドロキシヒドロキノンの生成を抑制しつつ、固形分濃度の高い希釈用コーヒー組成物の製造方法の提供。【解決手段】原料焙煎コーヒー豆を密閉容器内に収容し、加湿条件下、100~160℃で、0.5~4時間加熱処理する第1の工程と、第1の工程により得られた焙煎コーヒー豆を、加圧条件がゲージ圧で0.1~1.5MPaである加圧条件下で、110~170℃の温度にて抽出する第2の工程を含む、希釈用コーヒー組成物の製造方法。【選択図】なし