kashiwa mochi is a traditional Japanese rice cake made from glutinous rice. It is typically filled with sweet red bean paste and wrapped in a kashiwa leaf, which is the leaf of the oak tree. This treat is often enjoyed during the Children's Day celebration in Japan, symbolizing the growth and health of children. The use of the kashiwa leaf not only adds flavor but also represents the idea of new life, as the leaves only grow after the acorns have fallen. Kashiwa mochi is a seasonal delicacy, enjoyed for its unique taste and cultural significance.