PROBLEM TO BE SOLVED: To improve taste, especially prolonged aftertaste of sweetness, etc, of a sweetener having high sweetness such as sucralose.SOLUTION: Dextrin derived from potato and having a DE of not less than 2 and less than 5 is added to the sweetener having high sweetness. The sweetener having high sweetness is sucralose, acesulfame potassium, aspartame, stevia extract, or neotame.COPYRIGHT: (C)2012,JPO&INPIT【課題】スクラロースなどの高甘味度甘味料の味質の改善、特に甘味の後引き感などを改善する。【解決手段】高甘味度甘味料に対して、馬鈴薯由来でDEが2以上5未満であるデキストリンを添加する。【選択図】なし