At each tart specialty store, Kirfebon, the autumn / winter limited product "Sweet potato tart-brown sugar flavor-" has been released. The price is 577 yen per piece and 4,410 yen per hole.
Simple with sweet potato + brown sugar (Source: Kirfebon official Facebook page)
This product is a tart made by entwining carefully baked sweet potatoes with brown sugar to make a tart dough with corn flakes, and then combining it with rich brown sugar-containing fresh cream. The slightly effective sweet potato shochu enhances the aroma of sweet potatoes, and you can enjoy a simple taste. Scheduled to be sold until mid-January.