About Cornerstone Cellars
Cornerstone Cellars traces back to 1991, when a group of friends sharing a bottle of Cabernet Sauvignon on Howell Mountain sparked the idea for the label; physician Dr. Mike Dragutsky went on to found the winery around that spirit of wine as a vehicle for connection. Winemaker Kari Auringer has led the winemaking program for about 15 years, crafting small lots, sometimes fewer than 100 cases, from vineyard sites across Napa Valley, Sonoma County and the Santa Rita Hills.
The winery is best known for vineyard-designate Cabernet Sauvignon from sites including Howell Mountain and the Oakville bench (“Benchlands”), alongside its second label, Stepping Stone. Cornerstone now pours at The Yount Room, a collective tasting space in downtown Yountville that also features other boutique producers.
What began in 1991 as friends sharing Cabernet on Howell Mountain grew into three decades of small-lot Napa winemaking.
What Wino Notion Loved
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Founded 1991Started when friends shared a bottle of Cabernet on Howell Mountain; physician Dr. Mike Dragutsky went on to found the label.
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Winemaker Kari AuringerShe has led winemaking for about 15 years, crafting lots as small as 100 cases.
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Tasting room rebrandCornerstone now pours at The Yount Room, a shared Yountville tasting space with partner wineries, open 11am to 7pm, walk-ins welcome.
"A small-lot Napa Cabernet producer founded in 1991, now pouring alongside partner labels at The Yount Room in Yountville."
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Featured Wines
CABERNET SAUVIGNON
Cornerstone Cellars Benchlands Cabernet Sauvignon
2022 · Oakville, Napa Valley
A vineyard-designate Cabernet Sauvignon from Oakville bench fruit.
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CABERNET SAUVIGNON
Cornerstone Cellars Howell Mountain Cabernet Sauvignon
Current release · Howell Mountain, Napa Valley
Mountain-grown Cabernet Sauvignon from the site that inspired the winery's 1991 founding.
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CABERNET SAUVIGNON
Stepping Stone by Cornerstone Cellars
Current release · Napa Valley
The winery's more approachable second-label Cabernet Sauvignon.
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Wine names confirmed via cornerstonecellars.com and retailer/critic listings (wine-searcher.com, Decanter); exact current vintages for Howell Mountain and Stepping Stone not published, July 2026.
Tasting Experiences
Visit Website →Cornerstone Flight
A focused tasting of Cornerstone Cellars wines only, poured at The Yount Room in downtown Yountville.
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Collective Flight
A tasting spanning all the winemakers featured at The Yount Room, including Cornerstone.
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