Restaurant Naz: Fermentation-Forward Shinshu Cuisine

In a quiet, house-like setting in the mountain resort town of Karuizawa, Restaurant Naz (レストラン ナズ) has become a gastronomic destination for its deeply personal and innovative approach to modern European cooking. The kitchen's philosophy is rooted in fermentation and place, transforming ingredients from the surrounding Shinshu region into a highly creative tasting menu that is both technically precise and surprising.

Guests consistently praise the flawless execution and originality of the dishes. Highlights frequently mentioned include a signature plate of aged and smoked Shinshu salmon, a delicate cold noodle dish (somen) made from fermented cucumber, and pasta cooked in zucchini juice. The bespoke non-alcoholic pairings are a core part of the experience, designed as an integral component of each course rather than a simple beverage. The setting, in small, wood-accented dining rooms with large windows looking out onto a garden, contributes to a serene, slow-paced meal that lasts around three hours.

The main drawbacks are practical. The price is high, and securing a reservation is exceptionally difficult, with the restaurant reportedly booked out for years. The remote location also requires a 20 to 30-minute taxi ride from the nearest station. While most adore the pairings, a few diners find them assertive or idiosyncratic.

Reviewers in 2024–2026 report the tasting menu with a non-alcoholic pairing typically costs between ¥64,900 and ¥79,800 per person. While not for a casual meal, those seeking a one-of-a-kind culinary experience largely agree that the creativity and memorable dishes justify the expense.

• Booking: Extremely difficult. The restaurant is fully booked years in advance. Cancellations are occasionally announced via the restaurant's social media or made available through auction sites like Shokuoku.
• Getting There: Located in a quiet part of Karuizawa. A 20 to 30-minute taxi ride from Karuizawa or Shinano-Oiwake stations is required.
• Payment: Accepts VISA, Mastercard, and American Express credit cards. Electronic money and QR code payments are not accepted.
• Seating: The restaurant has two small dining rooms. Private rooms for 4 or 8 guests are available.
• Parking: Available on site.
• Smoking: The entire restaurant is non-smoking.