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Passaggio Wines

Passaggio Wines is a Sonoma, California winery founded by winemaker Cynthia Cosco, known for stainless-steel-aged white wines, rosé, Pinot Noir, and experimental New Generation releases.

Last updated August 26, 2026

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Overview

Passaggio Wines is a winery based in Sonoma, California, founded in 2007 by Cynthia Cosco. The name Passaggio translates roughly as “passage way” in Italian and refers to Cosco’s family history: her relatives immigrated to the United States from Italy during the early twentieth century. The name therefore connects the winery’s identity with migration, family heritage, and movement between places and traditions. Cosco entered winemaking after an earlier career in law enforcement in Virginia, where she worked for approximately 15 years. She moved to California in 2004 and initially worked in a liquor store before moving into winery production. Her subsequent experience included work at Crushpad in San Francisco, where she served as laboratory manager and later became the company’s white-wine winemaker. This technical and production background shaped Passaggio’s emphasis on hands-on winemaking and varietal experimentation. Passaggio produces wines in Sonoma from a range of grape varieties. Its portfolio includes an unoaked Chardonnay, Sauvignon Blanc, Pinot Grigio, dry rosé, Pinot Noir, Trousseau Gris, and Chenin Blanc. The winery’s unoaked Chardonnay and Pinot Grigio are made without malolactic fermentation and matured in stainless steel, preserving a fresher, more direct expression of the fruit. The rosé is presented under the name “Rose Colored Glasses” and is described as a dry style. Cosco began producing Pinot Noir for Passaggio in 2011. In addition to its core or proprietary wines, Passaggio has developed a New Generation series for experimental varietals and releases outside the principal lineup. The series has included Sauvignon Blanc and, in 2015, a Merlot rosé. The use of less conventional varieties for American wine production, including Trousseau Gris and Chenin Blanc, reflects the winery’s exploratory approach rather than a narrowly limited varietal program. Passaggio produces its wines at a facility in Sonoma. One documented critical result came from the 2014 New Generation Sauvignon Blanc made with grapes from the Russian River Valley American Viticultural Area: Wine Enthusiast gave the wine a score of 90 points. Available reference material does not establish the winery’s ownership structure, distribution footprint beyond the United States, current executive roster, sales, financial performance, or corporate parent. The brand is best characterized as an independent, founder-led Sonoma winery centered on small-scale varietal diversity, technical white-wine production, and experimental releases.

History

Passaggio Wines was established in Sonoma, California, in 2007 by Cynthia Cosco. The winery’s Italian name, commonly translated as “passage way,” was inspired by Cosco’s family history and the immigration of her relatives from Italy to the United States in the early twentieth century. The name gives the winery an identity grounded in movement, inheritance, and the transmission of family traditions across borders. Cosco did not begin her professional life as a winemaker. Before entering the wine industry, she spent approximately 15 years working in law enforcement in Virginia. She relocated to California in 2004, where her transition into wine began with employment at a liquor store. She then moved into winery operations and joined Crushpad in San Francisco. At Crushpad she worked as laboratory manager and later became the company’s winemaker for white wines. This progression provided experience in both analytical wine production and cellar work before she founded Passaggio. The winery’s production is based in Sonoma. Its portfolio has included an unoaked Chardonnay, Sauvignon Blanc, Pinot Grigio, rosé, Pinot Noir, Trousseau Gris, and Chenin Blanc. Passaggio’s unoaked Chardonnay and Pinot Grigio are made without malolactic fermentation and aged in stainless steel. These choices favor a clean, fresh presentation of the fruit and distinguish the wines from versions that rely on oak aging or fuller malolactic texture. The rosé, called “Rose Colored Glasses,” is made in a dry style. Cosco began producing Pinot Noir in 2011, adding a red-wine component to the winery’s earlier emphasis on white and rosé wines. Alongside its proprietary wines, Passaggio produces a New Generation series. This line functions as a space for experimentation, including varietals and wine styles outside the winery’s principal releases. Sauvignon Blanc has been part of the series, and a Merlot rosé was released in 2015. The winery has also worked with Trousseau Gris and Chenin Blanc, varieties that are less common in American viticulture than internationally dominant grapes such as Chardonnay, Cabernet Sauvignon, or Pinot Noir. The combination of conventional and unusual varieties gives Passaggio a flexible portfolio and supports its exploratory positioning. A notable recognition associated with the New Generation program came in 2016, when the 2014 New Generation Sauvignon Blanc, made from Russian River Valley AVA grapes, received 90 points from Wine Enthusiast. The result provided outside critical recognition for the experimental range and for the winery’s white-wine production. The available reference material identifies Passaggio as a Sonoma winery and describes its wines and founding history, but does not document a corporate parent, ownership transactions, public listing, financial results, broad international distribution, or a detailed current management team. On the documented record, Passaggio Wines is a founder-established Sonoma producer whose identity is built around hands-on winemaking, stainless-steel white wines, dry rosé, Pinot Noir, and experimentation with less-common grape varieties.

  • 2016

    New Generation Sauvignon Blanc earns critical recognition

    [1]

    Wine Enthusiast awards 90 points to Passaggio’s 2014 New Generation Sauvignon Blanc made from Russian River Valley grapes.

  • 2015

    New Generation Merlot rosé is released

    [1]

    Passaggio releases a Merlot rosé within its New Generation experimental series.

  • 2011

    Pinot Noir enters the portfolio

    [1]

    Cosco begins producing Pinot Noir for Passaggio Wines, broadening the winery’s range beyond white wines and rosé.

  • 2007

    Passaggio Wines is founded

    [1]

    Cynthia Cosco establishes Passaggio Wines in Sonoma, California. The winery’s name reflects her family’s Italian immigrant heritage.

Products and positioning

A Sonoma winery focused on expressive, technically precise wines, including stainless-steel-aged white varieties, dry rosé, Pinot Noir, and experimental or less-common grape varieties.

  • White wine

    Unoaked Chardonnay

    Passaggio’s Unoaked Chardonnay is made without oak aging and without malolactic fermentation, then aged in stainless steel. The production method is designed to retain a fresh, direct expression of the grape rather than adding oak-derived flavor or the softer, creamier texture often associated with malolactic conversion. It represents the winery’s technically focused approach to white-wine production.

  • White wine

    Sauvignon Blanc

    Sauvignon Blanc is part of Passaggio’s regular wine range and has also appeared in the New Generation series. The 2014 New Generation Sauvignon Blanc was produced from Russian River Valley AVA grapes and received a 90-point score from Wine Enthusiast in 2016. The wine illustrates the winery’s use of both established varieties and experimental release formats.

  • White wine

    Pinot Grigio

    Passaggio’s Pinot Grigio is made without malolactic fermentation and aged in stainless steel. This approach emphasizes freshness and varietal clarity while avoiding the oak influence associated with some richer white-wine styles. It is one of the winery’s named proprietary offerings.

  • Rosé wine

    Rose Colored Glasses

    Rose Colored Glasses is Passaggio’s dry rosé. The wine forms part of the winery’s core range and demonstrates its interest in producing a style that is crisp and food-oriented rather than sweet. The available reference material does not specify its grape composition, vintage history, or production volume.

  • Red wine · 2011

    Pinot Noir

    Passaggio began making Pinot Noir in 2011. Its addition expanded the winery’s portfolio into red wine while remaining consistent with the Sonoma setting, where Pinot Noir is an important regional variety. Detailed vineyard sources, élevage methods, and current vintage information are not specified in the available material.

  • White wine

    Trousseau Gris

    Trousseau Gris is among the less-common varieties used by Passaggio. Its inclusion reflects the winery’s willingness to work outside the most familiar American wine grapes and supports the brand’s exploratory identity. The reference material does not provide a separate label name, vintage range, or detailed winemaking description.

  • White wine

    Chenin Blanc

    Chenin Blanc is another variety associated with Passaggio’s portfolio. Its presence adds a historically important but comparatively less dominant American wine grape to the winery’s offerings. The available source does not specify whether it is a core proprietary bottling or part of a particular experimental release.

  • Experimental wine series

    New Generation series

    New Generation is Passaggio’s experimental series for varietals and wine styles outside the winery’s principal proprietary releases. The series has included Sauvignon Blanc and a Merlot rosé released in 2015. It gives the winery a format for testing unusual combinations and expanding beyond its established Chardonnay, Pinot Grigio, rosé, and Pinot Noir offerings.

Brand decisions

  • 2015

    Release a Merlot rosé in the New Generation seriesProduct launch

    Background

    Passaggio uses its New Generation line for experimental varietals and wines outside its main proprietary releases.

    Action taken

    The winery released a Merlot rosé as part of the New Generation series.

    Aftermath

    The release reinforced Passaggio’s exploratory approach to grape varieties and wine styles. No commercial outcome is documented.

  • 2011

    Add Pinot Noir to the winery portfolioProduct launch

    Background

    Passaggio had established a portfolio that included white wines and rosé. Cynthia Cosco expanded the range into red wine by beginning Pinot Noir production.

    Action taken

    The winery began producing Pinot Noir in 2011.

    Aftermath

    The move gave Passaggio a broader varietal portfolio, although the available sources do not provide sales or production results.

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