The producer
Founded in 1966, Union Champagne brings together fifteen cooperatives, 2,330 members and 1,420 hectares of vines. Each cooperative vinifies its own grapes, then the wines are assembled in Avize for the De Saint-Gall range. Fourteen cooperatives, representing 90% of the harvest collection, are based in Premier Cru or Grand Cru communes, giving the cellar a wide selection of classified-site base wines.
The range moves between Chardonnay and Pinot Noir. Le Blanc de Blancs Premier Cru is 100% Chardonnay, with citrus, white fruit, bright acidity and a dry finish. So Dark Grand Cru Millésime 2016 is led by 75% Pinot Noir, shifting the glass toward darker fruit, spice, firmer grip and more body. Together, the bottles show how blending can turn grapes from the Côte des Blancs, Montagne de Reims and Vallée de la Marne into distinct Champagne styles.
Known for
Champagne assembled in Avize from separately vinified cooperative wines, with Chardonnay-led and Pinot Noir-led De Saint-Gall bottlings.
Notable facts
- Founded in 1966 as a union of Champagne cooperatives.
- Fifteen member cooperatives bring together 2,330 members farming 1,420 hectares.
- Fourteen cooperatives, accounting for 90% of collection, are located in Premier Cru or Grand Cru communes.
- Each cooperative vinifies its own grapes before the wines are assembled in Avize.
- So Dark Grand Cru Millésime 2016 is led by 75% Pinot Noir, while Blanc de Blancs Premier Cru is 100% Chardonnay.
From the atlas
Union Champagne
At A Glance
Union Champagne is a Champagne cooperative union founded in 1966. Its fifteen member cooperatives bring together 2,330 members farming 1,420 hectares; fourteen of those cooperatives, accounting for 90% of collection, sit in Premier Cru or Grand Cru communes. The house wines to look for are De Saint-Gall, assembled in Avize from Chardonnay and Pinot Noir grown across three major Champagne areas.
The Producer
Union Champagne does not work like a single-estate Champagne house. Every member cooperative sends its complete harvest into the union, while each cooperative vinifies its own grapes before a cellar master assembles the finished wines in Avize. De Saint-Gall is the clearest bottled expression of this arrangement: locally made base wines are brought together into blends whose character comes from Chardonnay, Pinot Noir and the contrasting origins available to the group.
Place
De Saint-Gall draws Chardonnay and Pinot Noir from the Côte des Blancs, Montagne de Reims and Vallée de la Marne. These are not interchangeable names on a map: the range uses the white-grape emphasis associated with Chardonnay in the Côte des Blancs alongside Pinot Noir’s fuller frame from the broader Champagne sourcing base. A Premier Cru or Grand Cru designation on a De Saint-Gall label therefore signals the classified communes behind the blend, while the wine itself is assembled in Avize rather than tied to one village.
Soil And Site
The available record does not identify individual soils, slopes or parcels, so Union Champagne is best understood through its classified commune network. Fourteen of the fifteen cooperatives are based in Premier Cru or Grand Cru communes, supplying 90% of the collection. That concentration gives the cellar a large pool of fruit from classified sites, while the three-subregion sourcing keeps a Chardonnay-led bottling such as Blanc de Blancs Premier Cru distinct from a Pinot Noir-led Grand Cru wine such as So Dark.
Story
Founded as a union of Champagne cooperatives in 1966, Union Champagne built its own route from growers’ grapes to branded bottles. Its members can contribute to Champagne’s wider trade, but the union also bottles De Saint-Gall and Orpale. De Saint-Gall turns a dispersed vineyard base into a recognisable house range: grapes are vinified by the member cooperatives, then assembled in Avize, where the blend can set Chardonnay’s citrus-driven lift beside Pinot Noir’s darker fruit and broader body.
Vineyards And Cellar
The vineyard work is distributed among the fifteen cooperatives, and the entire harvest is supplied to Union Champagne. Keeping vinification with the individual cooperatives preserves separate lots before assembly, giving the Avize cellar material with different grape and site profiles to work with. De Saint-Gall’s Avize vat rooms were inaugurated in 2013; Union Champagne also reports 8,500 hectolitres of reserve wine in stainless-steel tanks and 980 hectolitres in foudres. Reserve wines can help maintain the familiar fruit, acidity and texture of a non-vintage blend when one harvest differs from another.
Wines
The De Saint-Gall range is easiest to read as a set of grape-led contrasts. Le Blanc de Blancs Premier Cru is 100% Chardonnay, placing dry citrus fruit, acidity and a lighter-bodied line at the centre of the wine. Le Tradition Premier Cru offers a broader Premier Cru comparison within the range. So Dark Grand Cru Millésime 2016 moves in the other direction: 75% Pinot Noir gives the vintage wine more dark-fruit character, weight and grip, with Chardonnay playing a supporting role. The labels show how Union Champagne uses its broad sourcing base for different shapes of Champagne rather than one fixed style.
In The Glass
Start with the Chardonnay wines for citrus, white fruit and floral notes carried by bright acidity and a dry finish. Their appeal lies in the way Chardonnay keeps the palate moving rather than piling on weight. So Dark 2016 shifts the sequence toward darker fruit and spice: Pinot Noir supplies a firmer frame and more body, while Chardonnay keeps the blend from becoming heavy. Across the range, the mousse and finish matter as much as aroma; the contrast is between Chardonnay’s linear refreshment and Pinot Noir’s more savoury, gripping shape.
A Bottle To Understand It
De Saint-Gall So Dark Grand Cru Millésime 2016 is the first bottle to try when the aim is to see the cooperative’s blending resources in one wine. It is a Grand Cru vintage Champagne led by 75% Pinot Noir, with Chardonnay in support, drawn from the same broad classified-site network that also produces the house’s Chardonnay-focused wines. Expect darker fruit, spice, firm acidity, more body than the Blanc de Blancs and a dry, savoury finish. Its Pinot Noir weight shows a different side of De Saint-Gall from the 100% Chardonnay Blanc de Blancs Premier Cru.
Anecdote
During Union Champagne’s early development, buildings became available in Avize. The cooperative group had only 48 hours to decide whether to acquire them. It took the opportunity, establishing the Avize base that later became central to De Saint-Gall’s work: member cooperatives vinify their own grapes, then the wines come to Avize for assembly. In 2013, De Saint-Gall inaugurated its vat rooms there. The decision concerned bricks and cellar space, but it secured a working address for wines built from harvests supplied by fifteen cooperatives across Champagne’s classified communes.
Final Word
Union Champagne offers Champagne with a useful contrast built in. Begin with the 100% Chardonnay Blanc de Blancs Premier Cru for citrus, acidity and a dry line, then pour So Dark 2016 to see how 75% Pinot Noir brings darker fruit, spice and more weight to a Grand Cru vintage blend assembled in Avize.
Sources
- https://www.union-champagne.fr/
- https://www.union-champagne.fr/100-uc/127/notre-histoire.aspx
- https://www.union-champagne.fr/100-uc/95/l-outil-de-production.aspx
- https://www.de-saint-gall.com/en/
- https://www.the-buyer.net/people/producer/union-champagne-cooperative-smart
- https://www.de-saint-gall.com/en/wines/
- https://www.de-saint-gall.com/en/new-champagne-so-dark/
- https://crush-magazine.com/champagne-de-saint-gall/
- https://www.gilbertgaillard.com/en/resultats/champagne-de-saint-gall-brut-grand-cru-so-dark-283341
- https://www.munskankarna.se/sv/vinlocus/tillfalligt-sortiment-20-mars-2026/de-saint-gall-so-dark-grand-cru-2016