Region

Yamanashi

山梨

Birthplace of Japanese wine, home of the Koshu grape

Yamanashi is the birthplace of the Japanese wine industry and the country's largest and most important wine region. Set in a mountain-ringed basin west of Tokyo, it enjoys long sunshine hours, low rainfall, and wide diurnal temperature swings — ideal conditions for viticulture. The region is world-renowned for the indigenous Koshu grape, which yields elegant, crisp white wines, while Muscat Bailey A produces distinctive reds. Historic districts such as Katsunuma and estates like Suntory Tomi no Oka Winery in Kai City anchor a landscape of more than 90 wineries, from century-old houses to innovative boutique producers, keeping Yamanashi at the forefront of Japanese wine quality.

Best for: Wine lovers seeking Japan's indigenous varieties and the historic heart of Japanese winemaking

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Producers

Food Pairings

Koshu whites shine with sushi, sashimi, and tempura; Muscat Bailey A reds suit yakitori and Yamanashi's houtou noodles.

Frequently Asked Questions

What is the signature grape variety of Yamanashi?
Koshu, a pink-skinned white grape indigenous to Japan, is Yamanashi's signature variety, producing elegant, crisp, gently citrusy white wines.
Is Yamanashi the largest wine region in Japan?
Yes. Yamanashi has the largest number of wineries in Japan — more than 90 — and is the historic and qualitative center of Japanese wine.
Which famous wineries are located in Yamanashi?
Suntory Tomi no Oka Winery in Kai City, whose Tomi Koshu 2022 won Best in Show at Decanter World Wine Awards 2024, plus many historic houses around Katsunuma.
What food pairs well with Yamanashi Koshu wine?
Koshu's delicate citrus and clean acidity make it a classic partner for sushi, sashimi, tempura, and other lightly seasoned Japanese dishes.