PROBLEM TO BE SOLVED: To provide: a method for producing a tea extract or coffee extract in which caffeine is reduced a caffeine reduced tea beverage or caffeine reduced coffee beverage production method and a caffeine reduced tea beverage or a caffeine reduced coffee beverage.SOLUTION: In the method for producing a tea extract or coffee extract in which the caffeine is reduced, a step of bringing a tea extract or a coffee extract and a white clay into contact is repeated at least two times, and the total amount of use of the white clay is 0.01 to 6 mass% or less with respect to the extract. Also provided is a caffeine-reduced tea beverage or caffeine-reduced coffee beverage production method comprising incorporating the obtained tea extract or coffee extract therein.SELECTED DRAWING: NoneCOPYRIGHT: (C)2017,JPO&INPIT【課題】カフェインが低減された茶抽出液またはコーヒー抽出液の製造方法、カフェイン低減茶飲料またはカフェイン低減コーヒー飲料の製造方法並びにカフェイン低減茶飲料またはカフェイン低減コーヒー飲料の提供。【解決手段】茶抽出液またはコーヒー抽出液と白土とを接触させる工程を2回以上、白土の総使用量が、前記抽出液に対し0.01~6質量%以下である、カフェインが低減された茶抽出液又はコーヒー抽出液の製造方法。得られた茶抽出液又はコーヒー抽出液を配合することを含んでなる、カフェイン低減茶飲料又はカフェイン低減コーヒー飲料の製造方法。【選択図】なし