Time Out says
Found on the second floor of a retro building connected to Shinbashi Station and filled with restaurants, this renowned eatery specialises in Inaniwa udon, a local speciality from Akita. The queues start forming here before lunchtime, with ravenous office workers lining up for an early bite of the thin, smooth noodles that are still just as chewy as standard udon. Dip the noodles in the homemade soup, a mixture combining duck paste and sesame with chemical-free fish broth, and slurp up the goodness while it's hot. On the side, you might want to consider one of the mini rice bowls topped with fresh fish. Nanakura often gets fully booked for dinner, so we recommend calling ahead.
2F, 2-20-15 Shinbashi, Minato-ku
|Transport:||Shinbashi Station (Yamanote, Keihin-Tohoku lines), Shiodome exit|
|Opening hours:||11.20am-2.10pm, 5pm-10pm (last orders 9pm) / closed Sat, Sun & hols|