Tenkasu
Tenkasu are crunchy bits of deep-fried flour batter used in Japanese cuisine, specifically in dishes such as soba, udon, takoyaki, and okonomiyaki. Hot, plain soba and udon with added tenkasu are called tanuki-soba and tanuki-udon, respectively.
They are also called agedama. According to the NHK Broadcasting Culture Research Institute, 68% of Japanese people called them tenkasu and 29% agedama in 2003. Tenkasu is more common in western Japan and agedama in the east.