To provide a novel method for producing a flavor improving composition prepared by using fruits or processed products thereof as raw materials.SOLUTION: A method for producing a beverage flavor improving composition includes a step of heating and refluxing fruits or processed products thereof in a closed system.SELECTED DRAWING: None【課題】果実またはその加工物を原料とする新規な香味改善組成物の製法の提供。【解決手段】飲料の香味改善組成物を製造する方法であって、果実またはその加工物を、閉鎖系内において加熱還流する工程を含んでなる、方法。【選択図】なし