There are two types, kaku-mochi (square mochi) and maru-mochi (round mochi) which are commercially available currently in Japan: one that uses glutinous rice without any processing as its base material; and the other that uses shiratama-ko powder (rice flour).
現在日本で市販されている角餅・丸餅には、原材料にもち米をそのまま使ったものと白玉粉を使ったものとがある。