This is a healthy recipe for making chocolate mochi using tofu. Mash silken tofu until smooth, then add sugar, potato starch, pure cocoa powder, and milk and mix well. Heating it in the microwave twice will give it a bouncy texture similar to warabi mochi. Chill it in the refrigerator until firm, cut it into pieces, and sprinkle with cocoa powder to complete a chocolate mochi with a rich flavor despite not using any chocolate. It's also appealing because it's easy to make and clean up afterwards.