PROBLEM TO BE SOLVED: To provide a frozen young sardine having a taste with good texture immediately after pot-boiling and sanitary food conditions such as zero germ only by short-time and simple cooking, and a producing method capable of producing the frozen young sardine at a low producing cost.SOLUTION: A frozen young sardine is obtained by freezing young sardine food material 1 to which the seasoning is added and which includes moisture generating a required amount of steam S when it is heated by a microwave oven for required time in the state of being enclosed in the interior of a storing member 3 formed like a bag using raw material heated by the microwave oven.COPYRIGHT: (C)2013,JPO&INPIT【課題】短時間の簡単な調理を行うだけで釜揚げ直後の良好な食感の味を有するとともに、菌数がゼロの衛生的を食品状態とすることができる冷凍しらすと、この冷凍しらすを安価な製造コストで製造できる製造方法を提供する。【解決手段】冷凍しらすは、調味料が添加され、且つ電子レンジで所要時間の加熱を行ったときに所要量の蒸気Sが発生する水分が含有されて成るしらす食材1が、電子レンジで加熱可能な素材により袋状に形成された収納部材3の内部に封入された状態で冷凍されてなる。【選択図】図3