Kagami mochi is one of Japan’s most iconic New Year decorations. Placed in the home to welcome the New Year deity, it represents purity, continuity, and good fortune. This guide explains what kagami mochi is, the meaning behind its shape, why a “daidai” fruit sits on top, and how modern versions have changed. What Is Kagami Mochi? Kagami mochi is a traditional New Year offering consisting of two stacked rice cakes with a citrus fruit on top. The decoration is displayed from late December until Kagami Biraki, a ceremonial “opening” in early January. The two mochi symbolize harmony between ...