PROBLEM TO BE SOLVED: To provide a microwave-heated processed food, such as a hamburg steak, or a microwave-heated boxed meal which compensates the microwave penetration depth of the microwave-heated processed food such as a hamburg steak, is easy to warm in a short time, especially has a thickness or shape eliminating the influence of uneven temperature, thereby eliminates a difference in heating rate between the hamburg steak and rice simultaneously heated in a microwave oven, and does not generate uneven temperature upon microwave heating.SOLUTION: The heated processed food, such as a hamburg steak 1, has a disk-shaped molded body made of food materials to be heated, including ground meat, having a thickness of 20-40 mm, and primarily cooked. The processed food has a surface provided with a plurality of grooves 8 crossing the surface, and having a width of not less than 3 mm and a depth of not less than 2 mm, side by side. The hamburg steak 1 and the rice R are arranged in a lunch box container to provide the microwave-heated boxed meal. The predetermined width and depth of the groove 8 efficiently increases the microwave penetration depth and facilitates warming the processed food by microwave heating in a short time without uneven temperature.COPYRIGHT: (C)2013,JPO&INPIT【課題】ハンバーグなどの電子レンジ加熱用加工食品のマイクロ波エネルギーの浸透深度を補って、短時間でも温まりやすくし、特に厚みや形状の影響を受け難くして温度ムラを解消し、これによって電子レンジで同時に加熱されるハンバーグと米飯の昇温速度の差をなくし、電子レンジ加熱により温度ムラの生じないハンバーグその他の電子レンジ加熱用加工食品または電子レンジ加熱用の弁当とすることである。【解決手段】ハンバーグ1などの加熱用加工食品は、挽肉を含む加熱用食品素材からなる厚さ20~40mmの一次加熱調理された盤状成形体からなり、この加工食品の表面に、これを横断する溝8を溝幅3mm以上、溝深さ2mm以上の大きさに形成して複数並列させて設ける。このハンバーグ1と米飯Rとを弁当容器内に並べて配置した電子レンジ加熱用弁当とする。前記溝8の所定幅と溝深さによってマイクロ波エネルギーの浸透深度を効率よく高めて、電子レンジ加熱により短時間でも温まりやすく温度ムラのないものとする。【選択図】図2
