The karashibi (カラシビ) spicy miso-rāmen here has a cult following. Choose your level of kara (spice) and shibi (a strange mouth-numbing sensation created by Japanese sanshō pepper). We recommend futsu-futsu (regular for both) for first-timers; oni (devil) level costs an extra ¥100. Look for the black door curtains.
The sister shop next door, with red curtains, specialises in tsukemen (noodles with condensed soup on the side for dipping).