Isono Kazuo (いそのかづお) is a one-man operation, a tiny counter that opens late and serves one of Sapporo's most distinctive bowls of ramen until the early morning. The main event is the house specialty, 'Sapporo Black'—a shoyu ramen unlike any other. The broth is a lacquer-dark blend of tamari and soy sauce, intensely savory and heavy on garlic. What truly sets it apart is the pronounced char and smokiness from wok-fried vegetables, a flavor known as 'wok hei' that permeates the entire bowl.
Nearly every visitor comes for the Sapporo Black. Reviewers consistently praise the deep, layered umami, the chewy, medium-thick 'chijire' noodles that grip the rich soup, and the tender slices of chāshū. Portions are generous, but for a smaller taste, a half-size option is also popular. The experience is part of the appeal: watching the owner command the tiny kitchen is a show in itself.
Be prepared for a wait. The shop has only six or seven seats, and queues of 30 to 120 minutes are common, often snaking up a narrow, stuffy stairwell. Because it's a one-person operation, turnover is slow, and the shop sometimes sells out before its official closing time. The ramen itself is a love-it-or-hate-it affair: many find the very salty, oily, and garlic-heavy broth overpowering, and the small space can get smoky from the wok. For those seeking a powerful, unique ramen experience, reviewers agree it offers excellent value. Reviewers in 2024–2026 typically paid around ¥1,100 for a full bowl of Sapporo Black and ¥950 for a half portion. A small side of rice was about ¥150.
- Getting There: Located on the first floor of the Dai 2 Asahi Kanko Building, about a 2-minute walk from Shiseikan Shogakko Mae Station.
- Booking: Reservations are not accepted. Expect to queue.
- Payment: Cash only. Credit cards, electronic money, and QR code payments are not accepted.
- Seating: 7 counter seats only.
- Good to Know: The shop is non-smoking and children are welcome. The kitchen is open and can get smoky, and the strong garlic aroma may cling to your clothes. Half portions are available.










