PROBLEM TO BE SOLVED: To provide a method for manufacturing instant dried porridge containing grain as main raw materials with simplified processes at lower cost than usual.SOLUTION: There are provided a method for manufacturing instant dried porridge containing grain as main raw materials including a process of cooking porridge by adding an enzyme for hydrolysis of α-1,4-glycosidic linkage and milled grain to water for rice cooking heated at 90°C or more and a process of lyophilization of cooked porridge, and instant dried porridge obtained by the method.SELECTED DRAWING: NoneCOPYRIGHT: (C)2017,JPO&INPIT【課題】穀類を主原料とする即席乾燥粥類を、通常より低コストでかつ工程を簡素化して製造する方法を提供すること。【解決手段】90℃以上に加熱した炊飯用水に、α-1,4-グリコシド結合を加水分解する酵素および搗精した穀類を添加して炊飯し、粥類を調理する工程、および調理した粥類を凍結乾燥する工程を含む、穀類を主原料とする即席乾燥粥類の製造方法、ならびに当該方法により得られた即席乾燥粥類。【選択図】なし