Koshu
甲州
Japan's oldest wine district & birthplace of the Koshu grape
Koshu is a historic wine appellation in Yamanashi Prefecture, centered around Koshu City (formerly Enzan, Katsunuma, and Daizen) in the Fuefuki River valley, east of the prefectural capital Kofu. Situated at an elevation of around 400–500 m in the shadow of Mount Fuji and the Japanese Alps, the region enjoys a continental climate with long daylight hours, significant diurnal temperature variation, and relatively low rainfall—ideal for viticulture. Katsunuma, the core sub-district, is regarded as the birthplace of the Koshu grape, with accounts tracing viticulture back over 1,300 years to the Nara period. The region is also Japan's oldest wine-producing area: in 1870, Yamada Hiroshi and Takuma Norihisa pioneered domestic winemaking here. Today Koshu City hosts more than 40 wineries, including many that have received 5-star ratings at the Japan Winery Award, and is the spiritual home of Japan's signature white wine grape, the Koshu variety. Note: 'Koshu' refers both to this geographic appellation and to the grape variety itself; the two share a name but are distinct concepts.
Best for: Delicate, low-alcohol dry whites made from the indigenous Koshu grape, often sur lie or lightly skin-contact; styles range from crisp and citrusy to umami-rich and aromatic
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Producers
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Food Pairings
Sashimi and sushi (Koshu's low iron suppresses fishy odors), tempura, lightly salted grilled fish, oysters, chilled tofu, and Yamanashi local dishes: houtou (miso-based flat noodle stew), Koshu tori motsu ni (sweet-savory soy-glazed chicken giblets), Koshu horse sashimi (basashi), and ayu river fish
Frequently Asked Questions
- What is the Koshu wine region?
- Koshu is a wine appellation centered on Koshu City in Yamanashi Prefecture, Japan. Located at 400–500 m elevation near Mount Fuji, it is Japan's oldest and most celebrated wine district, home to over 40 wineries and historically the birthplace of the Koshu grape variety.
- Is Koshu a grape variety or a wine region?
- Both. 'Koshu' refers simultaneously to the indigenous Japanese white wine grape variety and to the geographic appellation in Yamanashi Prefecture where it originated. Koshu wines are almost always made from the Koshu grape, but the grape is also grown in other Japanese prefectures outside the Koshu appellation.
- What does Koshu wine taste like?
- Koshu wine is typically light-bodied, dry, and refreshing with a pale straw color. Expect aromas of yuzu, white peach, citrus blossom, and jasmine, and a palate with crisp acidity, subtle mineral character, and a pleasant gentle bitterness on the finish. Sur lie versions add creamy texture and umami depth.
- What food pairs well with Koshu wine?
- Koshu is exceptionally food-friendly with Japanese cuisine. Its light body and high acidity complement sashimi and sushi, tempura, grilled fish, and oysters. Research shows Koshu's low iron content reduces fishy odors in raw fish. It also pairs wonderfully with Yamanashi local dishes like houtou noodle stew and tori motsu ni.
- How is Koshu wine different from other Japanese wines?
- Koshu is made from an indigenous grape unique to Japan—a natural hybrid of European Vitis vinifera and East Asian Vitis species brought via the Silk Road over 1,300 years ago. Its low alcohol (around 10–11%), delicate citrus profile, and affinity for Japanese cuisine make it distinctly different from Chardonnay or Sauvignon Blanc. Koshu was also the first Japanese wine to win Best in Show at the Decanter World Wine Awards (Suntory Tomi Koshu 2022, at DWWA 2024).