[Problem] The present invention provides a method and a device which, in a process of producing instant cooked rice or frozen cooked rice, loosen cooked rice into individual grains sufficiently and wholly, and particularly, provides a loosening method and device which gives smaller damage such as smashing cooked rice. [Solution] Using a device including a loosening room 21, 22, 23, ... into which cooked rice is fed, an air blowing port 31 which is configured to blow high-speed air toward the cooked rice in the loosening room； and a collecting room 26, 27 provided adjacent to the loosening room with a wall therebetween, the high-speed air is blown from the blowing port and is blown to the cooked rice in the loosening room such that the cooked rice is scatted and floated by blowing the air, and the cooked rice floating and moving over the wall is collected by the collecting room.本發明之目的在於，提供一種在製造速食米或冷凍米之過程中，將煮熟之米飯以充分且全面之方式撥鬆成鬆散狀之撥鬆方法及其裝置，而且，提供一種使米飯產生壓碎等之負擔較少之撥鬆方法及裝置。使用米飯撥鬆裝置，該米飯撥鬆裝置係具有供將煮熟之米飯加以投入之撥鬆室21、22、23…、對該撥鬆室內之米飯加以噴射高速空氣之空氣噴出口31、及隔著壁而與該撥鬆室鄰接之捕集室26、27，而自上述空氣噴出口噴射高速空氣，對上述撥鬆室內之米飯進行噴吹，藉由上述空氣使米飯產生飛散且產生浮游，並且利用捕集室對產生浮游且越過上述壁而到來之米飯進行捕集。
