Tabelog ratingNishio San (西尾さん) is a tiny, one-person operation in a Shinjuku basement that has earned a devoted following for two things rarely found elsewhere in Tokyo. The first is its Shizuoka-style oden, where skewers are simmered in a dark, intensely savoury dashi broth and served dusted with dried fish powder. The second is a unique hot shochu (oyu-wari) infused with kombu seaweed, which guests can refill themselves throughout the meal.
Reviewers consistently praise these two signatures, along with a roster of small plates that complement them perfectly. Popular choices include the handmade satsuma-age (fried fish cake), a creamy kabocha salad (kabo-sara), negitoro (tuna and scallion) served on Ritz crackers, and a comforting dish of fried potato with butter and shiokara (salted fermented squid). The owner's warm, direct service is also frequently mentioned, creating a welcoming atmosphere despite the strict house rules.
The main challenges are practical. The space is very small, often described as cramped and hot, and since it's a one-man show, service can slow down during busy periods. Some signature items, like the kombu shochu, may sell out. The booking system is notoriously difficult, requiring persistence to get through on the phone on the day you wish to visit.
Despite these hurdles, guests overwhelmingly consider Nishio San to be outstanding value. A typical dinner costs around ¥5,000–¥6,000 per person. Reviewers recently paid about ¥130 per oden skewer, ¥680 for the kabocha salad, ¥780 for the fried potato with shiokara, and ¥480 for the initial kombu shochu. The high quality and distinctive cooking make the effort to visit worthwhile.
- Reservations: Bookings are essential and can only be made by phone on the same day you wish to dine, starting from 1:00 PM. Expect to call repeatedly to get through. Walk-ins are not accepted.
- Getting There: The restaurant is in the basement (B1F) of the Shinjuku Building 3, a 2-minute walk from Shinjuku-sanchome Station or a 10-minute walk from JR Shinjuku Station.
- Payment: Cash only. Credit cards, electronic money, and QR code payments are not accepted.
- Seating: There are 16 counter seats. The space is small and best suited for solo diners or small groups of up to four. No private rooms are available.
- Rules & Etiquette: The restaurant is strictly non-smoking. Punctuality is required. Food orders are written on a paper slip.
- Drinks: The selection of soft drinks is limited, but guests are permitted to bring their own non-alcoholic beverages.
- Parking: Unavailable.
