To provide an eutectic crystalline sugar alcohol representing a singlemelting peak obtained by differential scanning calorimetry, which does not show any one of problems of requiring the addition of a comparatively large amount of a seed crystal to be added for crystallization and a prolonged aging period of several days for crystal growth as well as problems in production, such as an inefficient and complicated production process, while having excellent taste, low hygroscopicity, and excellent uniformity, grindability, and non－consolidation property；and a manufacturing method thereof, which comprises allowing a liquid composition containing two or more kinds of the sugar alcohol at a predetermined ratio to be added with a powder containing crystals of the same two or more kinds of the sugar alcohol at substantially the same usage ratio as that of the sugar alcohol, and kneading and aging a resulting mixture.提供一種藉差示掃描量熱術呈現單一熔峰之共熔結晶糖醇，該種共熔結晶糖醇並未顯示下述任一種問題，諸如需要添加較大量的晶種來結晶，以及需要長達數日的老化期來讓晶體生長；也未顯示製造上的問題，諸如製造程序無效且複雜，同時有絕佳口味、低吸濕性以及絕佳均勻度、研磨性、以及非聚結性質，及提供該共熔結晶糖醇的製造方法，該方法包含讓一種含有兩種兩種以上呈預定比例糖醇之液體組成物內，添加一種粉末，該粉末係以實質上與該糖醇相同使用比例，且含有相同的兩種兩種以上糖醇晶體，以及混練且老化所得混合物。
