Sekihan (赤飯, lit. red rice, rice boiled together with red beans) is a Japanese traditional dish. It is sticky rice steamed with adzuki beans, which give a reddish color to the rice, hence its name.The rice of ancient times of Japan was red. Therefore, red rice was used in the ancient divine work [in Japanese -- Google Translate translation]. Red rice has a strong taste of tannin, and its cultivation has been almost completely abandoned.