Au Detour du Sezannais is one of Marie's top single vineyard wines, it is a Blanc de Blancs (100% Chardonnay), Extra Brut (Bone dry), Tirage Sous Liege (Aged under cork). This wine is made from a best-pick fruit selection from her vineyards in Côte de Sézanne and best represents the clay & limestone soils on which it is grown: Richness, minerality, salinity, purity.

Today, Marie runs the estate, and with the help of her husband, cultivates 9 hectares of vines across three distinct terroirs: Côte de Sézanne, Côte des Bar, and Vallée de la Marne. All three classic Champagne varieties are grown - Chardonnay, Pinot Noir, and Pinot Meunier - though Chardonnay (Blanc de Blancs) is what she is most famous for.

The domaine has been certified organic since 2021, with a total of 10.5 hectares of vineyards (leased & owned) under organic management. Marie employs low-intervention winemaking methods, wild fermentation, extended lees aging, minimal dosage and extended élevage in bottle before release to ensure the wines best reflect the vines and their soils.

Copinet’s wines span from the elegant classicism of her "house-style" Blanc de Blancs Brut to the more expressive single-vineyard bottlings, capturing the nuances of each parcel and vineyard in vivid, lucid brushstrokes.

In a region where more than 19,000 growers sell the fruits of their labour to just a handful of large, corporate Champagne houses (such as Moët, Veuve etc), it is refreshing to support a small, indendent vigneronne who grows her own fruit to produce her own wine, thus embracing the true 'Grower Champagne' spirit.