Festivalo is a sweets shop selling Kagoshima-style sweet potato rare cake and sweet potato confections, located inside Daimaru at Tokyo Station. It sells products such as the purple sweet potato-flavored Rindo and Labri, and the sweet potato tart Tarpot. The rare cake is packaged frozen and thaws in about an hour and a half at room temperature once the ice pack is removed. Because the product requires refrigeration, it should be bought with travel time in mind rather than eaten right away.