Matcha red bean daifuku cake is a traditional Japanese dessert that consists of a small round mochi cake filled with sweet red bean paste and matcha powder. The mochi cake is made by mixing glutinous rice flour with sugar and water, then steaming the mixture until it becomes soft and chewy. The red bean paste and matcha powder are then added to the center of the cake, creating a delicious and satisfying dessert that is perfect for any occasion.