PROBLEM TO BE SOLVED: To provide a microwave oven heating adjusting material which, when a plurality of different frozen or refrigerated foods are simultaneously heated by means of a microwave oven, is capable of heating the foods in a chamber of the microwave oven at a uniform temperature by arranging a heating adjusting material containing a conductive liquid in the vicinity of a food that is to be suppressed from being heated, against a temperature difference caused due to differences of microwave absorption characteristics of the foods.SOLUTION: The present invention provides a microwave oven heating adjusting material 6 which includes a packaging body 1 formed of a thermoplastic resin film or sheet and a conductive liquid 2 enclosed in the packaging body 1, and which has pores with a diameter of 0.5-100 μm on a surface of the packaging body 1.SELECTED DRAWING: Figure 1COPYRIGHT: (C)2017,JPO&INPIT【課題】冷凍もしくは冷蔵された複数の異なる食材を電子レンジで同時に加熱した際、各食材のマイクロ波吸収特性の違いにより生じる温度差に対して、加熱を抑制したい食材の近くに導電性液体を含む加熱調整材を配置することにより、電子レンジ庫内の食材を均一温度に加熱することができる電子レンジ加熱調整材を提供する。【解決手段】本発明は、熱可塑性樹脂フィルムまたはシートからなる包装体1と、前記包装体1に封入される導電性液体2とを含み、前記包装体1の表面に径が0.5~100μmの孔を有する、電子レンジ加熱調整材6である。【選択図】図1