Matcha mochi is a traditional Japanese sweet made from glutinous sweet rice flour and green tea powder (matcha). It is usually shaped into small rounds or squares. You can find them plain or filled with sweet red bean paste or other fillings such as strawberries or mochi ice cream. Matcha mochi is often enjoyed as a snack or dessert in Japan and is becoming increasingly popular in the U.S. and other parts of the world due to its unique taste and texture.