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SpecialtyUnoaked Chardonnay program, California's most focused advocate for the style
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LocationDowntown Sonoma Plaza, walk-in accessible from anywhere in town
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VarietiesChardonnay (steel-fermented), Pinot Noir, Sangiovese
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VibeEducational, approachable, genuinely passionate about the unoaked style
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About Passaggio Wines
Passaggio Wines at 19 East Napa Street is one of the Sonoma Valley's most distinctive and philosophically committed small-production labels, founded in 2008 by Cindy Cosco with a singular focus on unoaked Chardonnay, a winemaking choice that has defined the label's identity and generated both devoted fans and genuine critical recognition for an approach that California wine has traditionally undervalued.
The Passaggio philosophy is straightforward and radical: Chardonnay fermented and aged in stainless steel, with no oak influence whatsoever, to produce a white wine that expresses pure varietal character, natural acidity, and genuine fruit transparency rather than the vanilla and butter flavors that barrel fermentation typically contributes. The result is wines that taste more like unoaked white Burgundy, lean, mineral, food-friendly, and genuinely refreshing.
The downtown Sonoma Plaza location on East Napa Street puts Passaggio within easy walking distance of the historic mission, the plaza's restaurants and shops, and the many other tasting rooms that make downtown Sonoma California's most walkable wine tasting destination. Walk-ins are welcome daily from 11am to 6pm with a $20 starting fee.
"Passaggio is unoaked Chardonnay evangelism in the heart of Sonoma, a downtown tasting room that has spent fifteen years proving California Chardonnay doesn't need oak to be serious and delicious."
Featured Wines
White · Signature
Unoaked Chardonnay
Sonoma Valley
The Passaggio statement, pure, mineral, showing what California Chardonnay tastes like without oak influence. Crisp, food-friendly, genuinely surprising.
White Wine
Unoaked Chardonnay
Russian River Valley
The RRV expression, leaner and more citrus-driven, with the cool-climate tension that Russian River's best Chardonnay sites produce.
Red Wine
Pinot Noir
Sonoma Coast
Cool-climate Pinot Noir with red-fruit clarity and earthen character, Passaggio's commitment to terroir transparency applied to the region's signature red.
Tasting Experiences
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Classic Tasting
A guided tasting of current-release wines at Passaggio Wines. Contact the winery for current pricing, duration, and availability.
Contact winery
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Group & Private Experiences
Many wineries in Sonoma Valley offer private tastings, reserve experiences, or seated tours for groups. Reach out directly to plan.
By appointment
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Vineyard & Cellar Tours
When available, vineyard or cellar tours offer a deeper look at how Passaggio Wines makes its wines. Check the winery's website for schedules.
Varies
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Events & Member Programs
Passaggio Wines may host seasonal events, harvest activities, or wine club member tastings. Subscribe via the winery's site for updates.
Varies
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