PROBLEM TO BE SOLVED: To provide a method for producing a porous food, including mixing a pulverized food material prepared by cutting and pulverizing a food material, with broken ice, and freeze-drying the resultant mixed product, and to provide the porous food produced by the method.SOLUTION: The method for producing the porous food comprises preparing the mixed product by mixing the pulverized food (e.g., a pulverized product prepared by cutting or pulverizing seaweeds), with the broken ice, and freeze-drying the resultant mixed product after the preparation. Preferably, the temperature at the mixing is from -5°C to 5°C. The pulverized food material can be sterilized by bringing the pulverized food material into contact with steam at a temperature from 60°C to 120°C. The porous food material is produced by the method for producing the porous material, and at least one of seasonings (common salt, sugar or the like) and preservative (benzoic acid or the like) can be added thereto.COPYRIGHT: (C)2009,JPO&INPIT【課題】食材を裁断又は粉砕してなる粉砕食材と、砕氷とを混合し、これを凍結乾燥させる多孔食品の製造方法及びこの方法により製造された多孔食品を提供する。【解決手段】本発明の多孔食品の製造方法は、粉砕食材(海藻類等を裁断又は粉砕した粉砕物等)と砕氷とを混合して混合物を調製し、その後、この混合物を凍結乾燥させることを特徴とする。混合時の温度は-5~5℃とすることが好ましい。また、粉砕食材を60~120℃の水蒸気と接触させて、粉砕食材を殺菌することもできる。本発明の多孔食品は、本発明の多孔食品の製造方法により製造され、調味料(塩、砂糖等)及び保存剤(安息香酸等)のうちの少なくとも一方を添加することができる。【選択図】なし