Kagami mochi, a traditional new year’s decoration. 67. Mochi January 04, 2021 by Jason Nieling in Food Yakimochi, a grilled piece of mochi filled with sweet red bean paste. Mochi is a popular rice-based food in Japan that has been considered sacred since ancient times. Join Jason and Paul as they learn about how it is made, its cultural significance, and the many types of dishes that can be made with mochi!