< Topic >To become the energy conservation by the fact that compacting cooking time, happening attendant upon the generation of vapor from the part which softens with local overheating preventing becoming hollow and the blowing out etc of the taste moisture with springing out and springing out to outside the rice cake, finishing back on the surface which is suited for character print, it offers the concave forma cutting rice cake which can to burn fast tastily cleanly.SolutionsThe surface 2 which forms the rectangular flat square body in the cutting rice cake of fragment film pack packing which is formed with rectangular flat square body, or from long side both edge strip 4 of the underside, from the position about 10.0 - 15.0mm concurrent to the center of the shorter side, the channel 6 depth about 3.0 - 4.0mm is made under, the surface 5 is changed into concave forma briefly.< Choice figure >Drawing 1【課題】調理時間を短縮することで省エネとなり、局部的過熱により柔軟化した部分からの水蒸気の発生に伴い起こる、餅の外部への飛び出し、飛び出しによる空洞化、旨味水分の噴き出し等を防止して、裏面を文字印刷に適した面に仕上げて、速く・美味しく・奇麗に焼き上げることができる凹形切り餅を提供する。【解決手段】長方形の平板方形体で形成される小片フィルムパック包装の切り餅において、長方形の平板方形体を形成する上面2又は下面の長辺両側面4から、短辺の中心に並行した10.0~15.0mm程の位置から、下に深さ3.0~4.0mm程の溝6を作り、短面5を凹形に変える。【選択図】図1