Tengu-yaki is Takaosansumika's signature pastry, featuring sweet Hokkaido black bean paste filling and designed with the distinctive face of a crow tengu (a mythical creature associated with Mount Takao). This specialty item is exclusive to Takaosansumika and cannot be purchased anywhere else, making it a unique souvenir available only to those who visit Mount Takao. The design reflects the mountain's legendary connection to thousands of mythical creatures, including the famous Tengu.