Akayu
赤湯
The holy land of Delaware grapes — a natural wine hub where Tohoku's oldest winery and boundary-pushing producers share the same hillside slopes.
About Akayu
- Producers listed
- 5
- Most wineries in
- 南陽市
- Founded 2010 or later
- 40%
- 2 of 5 with a known founding year
Akayu, in Nanyo City, Yamagata Prefecture, is a historic Japanese wine region known as the holy land of Delaware grapes. Located on well-drained south-facing slopes in the Okitama basin, the area benefits from dramatic diurnal temperature shifts and mineral-rich soils that produce high-quality, concentrated fruit. Home to Tohoku's oldest winery, Sakai Winery (est. 1892), Akayu now hosts six distinctive wineries. In recent years it has emerged as a vibrant hub for natural wines, led by innovative producers such as Yellow Magic Winery.
Best for
Natural wine enthusiasts and those seeking unique, low-intervention Japanese wines made from Delaware grapes. Also ideal for travellers combining hot-spring relaxation with winery visits.
Food Pairings
Light Japanese dishes, tempura of mountain vegetables, salt-seasoned yakitori, dashi-based cuisine, and spicy Asian dishes such as gyoza and Thai food.
Winery Map of Akayu
Of the Akayu wineries on Vinami, we show the 5 whose locations we have verified.
Wineries by Municipality
- 南陽市5
- Grape RepublicFounded 2017
- Kinkei WineFounded 1940
- Oura BudoshuFounded 1939
- Sakai WineryFounded 1892
- Yellow Magic WineryFounded 2019
Addresses and founding years are verified against each winery's official website and public information from local governments and industry bodies. Sources are listed on each producer's page.
Producers
グレープリパブリック
Grape Republic
Grape Republic is a natural wine producer based in Nanyo City, Yamagata Prefecture, northeastern Japan. Founded in 2017 by Takayuki Taira after learning of abandoned vineyard land in his mother's hometown during the 2011 Tōhoku earthquake relief effort, the winery set out to revive the region's grape-growing heritage. Its cellar houses seventeen amphorae of up to 1,000 liters — one of the largest amphora-based winemaking operations in Japan — used to ferment local varieties such as Delaware, Niagara, Steuben, Muscat Bailey A, and Neo Muscat with wild yeast alone. Every wine follows a strict 'Made of 100% Grapes' philosophy: no added sugar, acids, sulfites, or commercial yeast, and grapes are dry-farmed and hand-harvested. This zero-zero, minimal-intervention approach has earned Grape Republic international recognition, with wines poured at RAW WINE and distributed by natural wine importers across the US, Europe, and Asia.
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grape-republic.com/金渓ワイン
Kinkei Wine
Kinkei Wine is the label of Sato Budoshu (Yugengaisha Sato Budoshu), a small family-run winery founded in 1940 in the Akayu hot-spring district of Nanyo City, Yamagata Prefecture. The winery's name comes from the 'golden valley' (kinkei) where gold was once mined during the Edo period, before founder Tomoya Sato cleared the land to plant grapevines. Now led by president Asako Sato, the winery uses 100% Yamagata-grown grapes — including Delaware, Niagara, Muscat Bailey A, Black Queen, Campbell Early, and Merlot — and keeps production deliberately small, with roughly 90% of its output sold and consumed within Yamagata Prefecture. Eschewing mass production, Kinkei crafts approachable, clean-tasting red, white, rosé, sweet, dry, and additive-free sparkling wines that reflect the Okitama Basin's wide diurnal temperature swings, and several bottlings carry GI Yamagata certification.
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www.kinkei.net/大浦葡萄酒
Oura Budoshu
Founded in 1939 in the Akayu area of Nanyo City, Yamagata Prefecture, Oura Budoshu (Oura Winery) is a historic, family-run winery now in its fourth generation under winemaker Hiroo Oura. Long known as a contract producer for major Japanese wine manufacturers, the winery has in recent years focused on its own regional label, crafting wine that reflects the landscape and culture of the Okitama basin. Working almost exclusively with Yamagata-grown grapes — including Delaware, Muscat Bailey A, Black Queen, and Bailey Alicante A sourced from contracted growers and its own vineyards — Oura produces approachable, food-friendly wines that have won awards at the Japan Wine Competition and the Sakura Wine Award.
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ourawine.com/酒井ワイナリー
Sakai Winery
Founded in 1892 in the hot-spring town of Akayu, Nanyo City, Yamagata Prefecture, Sakai Winery is the oldest winery in the Tohoku region of Japan. Established by Yasou Sakai, the 16th-generation head of the Sakai family, on a steep hillside called Toriagezaka ('the slope of the soaring birds'), the winery has produced wine in the same location for over 130 years. In 2004, fifth-generation winemaker Ippei Sakai — a graduate of Tokyo University of Agriculture's Department of Brewing — took over and led a transformational return to the winery's founding-era methods: wild-yeast fermentation, no filtration (the winery has never owned a filtration machine), no fining, and minimal sulfur. All wines are released under the 'BIRDUP' brand with each cuvée named after wild birds (shijukara/great tit, jobitaki/Daurian redstart, aogera/Japanese green woodpecker) that inhabit the vineyards and surrounding Akayu countryside.
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www.sakai-winery.jp/イエローマジックワイナリー
Yellow Magic Winery
Yellow Magic Winery was founded on September 27, 2019, by Sumito Iwatani in Akayu, Nanyo City, Yamagata Prefecture — the heartland of Delaware grape cultivation in Japan. After honing his craft at Hitomi Winery in Shiga and Shimanouchi Fujimaru Brewery in Osaka, Iwatani chose this region for its deep viticultural heritage and outstanding Delaware terroir. The winery name 'Yellow Magic' (黄色魔術醸造所) reflects a vision of creating wines that resonate with Asian and Japanese sensibilities — wines born of this land that make you glad to call it home. Operating under the philosophy of 'neither add nor subtract,' Yellow Magic produces unfiltered, cloudy (nigori) natural wines using wild yeasts with no sulfite additions, aiming for honest wines that are gentle on the body and tell no lies.
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www.yellowmagicwinery.com
Frequently Asked Questions
- Why is Akayu called 'the holy land of Delaware grapes'?
- Delaware grape cultivation flourished in Akayu from the early Showa period (1920s–1930s). The south-facing, well-drained slopes combined with the Okitama basin's large diurnal temperature swings created ideal conditions for the variety, making Yamagata the top Delaware-producing prefecture in Japan and Akayu its spiritual home.
- Which is the oldest winery in the Akayu region?
- Sakai Winery, established in 1892, is the oldest winery in the Tohoku region and is located in Akayu. It is renowned for producing unfiltered wines without fining agents, staying true to its founding philosophy.
- What style of wines is Akayu known for today?
- Akayu is increasingly known for natural, low-intervention wines — unfiltered, no-added-sulphite, and orange-style whites made from Delaware and other local varieties. Yellow Magic Winery is a leading name in this movement alongside traditional producers.