Kobaiya
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Kobaiya stands at the entrance of Oishi Park on Lake Kawaguchi's northern shore, commanding one of the most unobstructed Mt. Fuji views of any restaurant in the area. The interior is warm and unpretentious, with a terrace opened in July 2025 for sunset dinner — prime real estate for watching the mountain glow orange in the evening. The kitchen's signature is hōtō: flat wheat noodles in a miso-rich broth simmered for over eight hours, thick enough to want finishing to the last drop. Tempura sets and wagyu sirloin nigiri round out a menu priced from ¥2,500 to ¥5,000.
Address
2585-115 Ōishi, Fujikawaguchiko, Minamitsuru District, Yamanashi 401-0305, Japan
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Contacts
Hours
Today
Open now10:30 – 20:30
Monday
10:30 – 20:30
Tuesday
10:30 – 20:30
Wednesday
10:30 – 20:30
Thursday
10:30 – 20:30
Friday
10:30 – 20:30
Saturday
10:30 – 20:30
Sunday
10:30 – 20:30
Features
Outdoor seatingHoto noodles in 8-hour miso brothReservations recommendedCredit cards acceptedKids friendlyPanoramic Mt. Fuji view at Oishi Park entranceGreat for groups, families, and sunset diningYamanashi regional JapaneseWagyu sirloin nigiri and tempura sets
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Menu
* The menu was scanned by a user, not uploaded by the owner. There may be inaccuracies.
Hoto Noodles
Tempura Sets
Wagyu Dishes
Desserts
Hoto Noodles
Shrimp Miso Hoto
Kobaiya's signature hoto: thick flat wheat noodles in a deeply umami miso broth simmered for over 8 hours, enriched with whole shrimp, kabocha squash, and seasonal root vegetables. Rich, warming, and filling.
¥2,500
Miso Hoto
The classic Yamanashi regional dish — wide flat noodles cooked directly in the miso pot with kabocha, carrot, mushroom, and leek. Hearty and soul-warming, especially in cooler months.
¥2,200
Granny's Hoto
A more traditional, home-style version of hoto with a milder miso base and generous portions of root vegetables. Named in the spirit of grandmotherly home cooking.
¥2,000
Tempura Sets
Tempura Meal Set
An assortment of lightly battered and fried seasonal vegetables and white fish, served with rice, miso soup, pickles, and tentsuyu dipping broth. Crispy and well-balanced.
¥2,800
Shrimp Tempura Set
Plump whole shrimp in a delicate batter, fried to a golden crisp, served with rice, soup, and seasonal side dishes.
¥3,200
Wagyu Dishes
Wagyu Sirloin Nigiri
Seared premium wagyu sirloin sliced and draped over hand-pressed sushi rice. A specialty dish that pairs the richness of Japanese wagyu with the lakeside setting.
¥5,000
Wagyu Steak Set
Pan-seared wagyu steak served with rice, miso soup, and seasonal vegetables. Tender, marbled, and full-flavoured.
¥4,800
Desserts
Artisan Gelato (Gelateria Angela)
Authentic Italian-style gelato from the award-winning Gelateria Angela food truck stationed in front of Kobaiya. Rotating seasonal flavours — available to enjoy inside or on the new terrace.
¥500