PROBLEM TO BE SOLVED: To provide an excellent rice cooking ingredient containing milled konjak and rare saccharide, capable of improving one or more biofunctions of a blood glucose level, weight gain and visceral adiposity; and to provide cooked rice.SOLUTION: There is provided a rice cooking ingredient blended into rice or water at a rice cooking time, and enabling cooking of cooked rice having an inhibitory effect of increase of a blood glucose level when being eaten. The rice cooking ingredient contains milled konjak having a pH value adjusted at 2.5-7.4, and rare saccharide. Cooked rice cooked by using the rice cooking ingredient is also provided.SELECTED DRAWING: None【課題】摩砕コンニャクおよび希少糖を含む血糖値、体重増加、および内臓脂肪蓄積の一以上の生体機能を改善することができる優れた炊飯配合剤および炊飯米を提供する。【解決手段】炊飯時に米および水の中に配合し、食した際に血糖値の上昇抑制効果がある炊飯米に炊きあがる炊飯配合剤において、pH値を2.5~7.4に調整した摩砕コンニャクおよび希少糖を含むことを特徴とする炊飯配合剤および該炊飯配合剤を使用して炊飯した炊飯米。【選択図】なし