Doug and Katsuko Sparks started their winemaking journey as home winemakers in their garage in San Francisco’s Inner Sunset District. In 1997, having completed winemaking courses at UC Davis, Doug and Katsuko took their winemaking hobby commercial and made their first vintage of Sunset Cellars at a shared facility inside Rosenblum Winery in Alameda.

Over the years they built long-lasting relationships with some top growers such as the Teldeschi family in Dry Creek Valley and Wirth Ranch in Solano County Green Valley. Many of these are old vine Zinfandel vineyards, with many vines over 90 years old. Working with such precious fruit, Doug and Katsuko’s goal has been to create supple red wines that emphasize the grapes’ natural fruit flavors. They like to call their red wine approach “Zen Zin,” a minimalist winemaking style that allows the wines to express the flavors and characteristics created in the vineyards.