On the occasion of Kagamibiraki (an annual ritual of cutting and eating a large, round rice cake, which has been offered to the gods to celebrate the new year, on January 11), Japanese people make shiruko or zenzai using Kagamimochi (large, round rice cake offered to the gods) at home.
鏡開きにおいては、一般家庭でも鏡餅を用いて汁粉や善哉を作る。