Loss of the product is made to decrease and at the same time the material one freezing method of being possible to lighten product cost, material one transport or storage method, material one process method, and material one freezing ones are offered. The material one freezing method due to this invention, process and the material piece which cover the oil in the material piece of the food, has with the material piece which makes process and the oil freeze which are made to freeze quickly at the temperature which is higher than fusion point of the oil, quickly and the process which is made to freeze at the temperature which is lower than fusion point of the oil together. In addition, material one freezing ones due to this invention (1), the food material piece which freezes (2) and is covered in the food material piece (2) and at the same time the oil which possesses the fusion point whose the food material piece (2) is lower than freezing temperature (4) possesses.製品のロスを減少させ且つ製品コストを軽減することができる素材片凍結方法、素材片輸送又は保管方法、素材片加工方法、及び素材片凍結物を提供する。本発明による素材片凍結方法は、食品の素材片に油をまぶす工程と、素材片を、油の融点よりも高い温度で急速凍結させる工程と、油を、急速凍結させた素材片と一緒に油の融点よりも低い温度で凍結させる工程とを有する。また、本発明による素材片凍結物(1)は、凍結した食品素材片(2)と、食品素材片(2)にまぶされ且つ食品素材片(2)の凍結温度よりも低い融点を有する油(4)と有する。
