What grapes make up O?

O blends Delaware with the rare Otaru-native Tabiji grape and a portion of estate-grown Chardonnay. Earlier vintages used Pinot Gris instead of Chardonnay in the blend.

What does O taste like?

A pale straw-colored, off-dry white with aromas of yellow peach, honeyed apple, ripe Japanese citrus, honey, and cotton candy, finishing softly with light bitterness and elegant length.

What food pairs well with O?

Serve lightly chilled with Hokkaido zangi (fried chicken), sashimi, and local cheeses or hams; it is versatile enough for a wide range of Japanese and Western dishes.

Where are the grapes grown?

The Delaware and Tabiji grapes come from contracted growers in Yoichi, Hokkaido, while the Chardonnay is partly sourced from OSA WINERY's own vineyard in Otaru.

CuvéeHokkaidoWhite

O

オー

OSA WINERY

About O

Style: White
Grape Varieties: Delaware, Tabiji, Chardonnay
Price Range: ¥3,410
Alcohol: 10%

O is OSA WINERY's flagship white wine, now in its tenth vintage. Grown in Yoichi and Otaru, Hokkaido, it blends contracted-grower Delaware with the rare Otaru-native Tabiji grape and a portion of estate-grown Chardonnay, after tasting ten trial blending ratios against food (earlier vintages used Pinot Gris instead of Chardonnay). The wine shows a pale straw color with aromas of yellow peach, honeyed apple, ripe Japanese citrus such as iyokan and hassaku, honey, and cotton candy, leading into a soft, off-dry palate with light bitterness and a graceful finish. About 3,000 bottles were released in July 2025. The name reflects the winery's 'dosanco bianco' sub-theme: an everyday Hokkaido white built purely to make food taste even better.

Sommelier's Note

Ten vintages in, O remains OSA WINERY's clearest statement of intent — a Delaware-Tabiji-Chardonnay blend built purely to make food taste better, and it succeeds every time.

New to wine?

An easy, food-friendly gateway into Hokkaido white wine — light, aromatic, and never too serious.

Food Pairings

Best enjoyed lightly chilled as an everyday food wine. It pairs especially well with Hokkaido classics such as zangi (Hokkaido-style fried chicken), sashimi, and local cheeses and hams, and suits both Japanese and Western dishes broadly.

When to drink it

Everyday dinners, casual gatherings, or a slightly special meal out — equally at home at the table or a nice restaurant.

Terroir & Winemaking

Delaware and Tabiji grapes from contracted Yoichi growers are blended with a portion of estate-grown Otaru Chardonnay. Grapes are hand-sorted by sight and smell immediately after harvest with the help of volunteers, then fermented separately by harvest date, vineyard, and variety in small tanks before the base wines are blended the following spring to balance the cuvée without adjusting sugar or acidity.

About the producer

OSA WINERYAromatic small-batch wines from Otaru's stone warehouse小樽市, 北海道 · Founded 2015Visit the producer page →

More wines from OSA WINERY

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Frequently Asked Questions

What grapes make up O?: O blends Delaware with the rare Otaru-native Tabiji grape and a portion of estate-grown Chardonnay. Earlier vintages used Pinot Gris instead of Chardonnay in the blend.
What does O taste like?: A pale straw-colored, off-dry white with aromas of yellow peach, honeyed apple, ripe Japanese citrus, honey, and cotton candy, finishing softly with light bitterness and elegant length.
What food pairs well with O?: Serve lightly chilled with Hokkaido zangi (fried chicken), sashimi, and local cheeses or hams; it is versatile enough for a wide range of Japanese and Western dishes.
Where are the grapes grown?: The Delaware and Tabiji grapes come from contracted growers in Yoichi, Hokkaido, while the Chardonnay is partly sourced from OSA WINERY's own vineyard in Otaru.

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