PROBLEM TO BE SOLVED: To provide frozen cooked rice capable of not only achieving texture of freshly cooked rice but also being easily loosen and forming favorable appearance, coping with a variety of use such as risotto, etc., and clearing a proposition of substantially zero cooking time by only heating it in a container.SOLUTION: An optimal amount of water that is good for eating within a range of 40% and 400% ratio by weight is added to pregelatinized rice with moisture value of between 5 wt.% and 50 wt.% a prescribed amount of pregelatinized rice is vacuum-packaged in a container after water being added, heat-treated for 10 seconds to 60 minutes at 85°C to 125°C under such condition, froze after cooling it to a normal temperature, and heated in a frozen state in the container and opened. Then, the texture of freshly cooked rice, being easy loosen, coping with a variety of use such as risotto, etc., and clearing a proposition of substantially zero cooking time can be achieved.COPYRIGHT: (C)2014,JPO&INPIT【課題】容器ごと加熱するだけで、炊き立てのごはんの食感ばかりか、ほぐしが容易で見た目も良好に形成出来、且つリゾット等の多種多様の用途に対応させ得て、しかも炊飯時間が実質的にゼロの命題も、クリアーすることのできる冷凍加工米飯を提供する。【解決手段】水分値が5重量%ないし50重量%のアルファー化米に対して、重量比で40%ないし400%の範囲で可食に耐えうる最適な水分を添加し、該水分添加後の所定量のアルファー化米を容器にて真空包装して、そのままの状態で、85°Cないし125°Cにて10秒間ないし60分間加熱処理し、常温まで冷却した後、冷凍することで、食べる時に、冷凍状態の容器ごと加熱したあと開封すれば、炊き立ての食感のごはんが得られ、ほぐしも容易で、リゾット等の多種多様の用途に対応させ得て、実質的に炊飯時間ゼロの命題をクリアーすることができる。
