Puffed food

The puffed food according to the present invention contains milk protein in an amount of 75 mass% or more with respect to the total protein, and is characterized in that the pore structure thereof satisfies the following ranges as measured using an X-ray [mu] CT imaging device: (1A) the specific surface area of the solid region: 6-22/mm; (1B) the specific surface area of the pores is 3-8/mm. 根据本发明的膨化食品含有相对于总蛋白质的75质量％以上比例的乳蛋白，并且所述膨化食品的特征在于使用X射线μCT成像设备测得的其的孔结构满足以下范围：[比表面积]：(1A)固体区域的比表面积：6-22/mm；(1B)孔隙的比表面积：3-8/mm。