Château Cos d'Estournel

Louis-Gaspard d'Estournel inherited Cos and Pomys in 1791 and founded Cos d'Estournel in 1811. Convinced that the terroir of the hill of Cos was exceptional, he took many risks to enlarge the estate, growing the vineyard from 14 to 45 hectares. Cos d'Estournel was one of the first Bordeaux châteaux to bottle, label and sell its own wine; rather than rely on the negociant system, d'Estournel dispatched his wines to distant markets himself and signed each bottle as a mark of independence. His search for new markets reached Asia, where British officers stationed in India were drinking his wine by 1838. That year the newspaper Le Producteur reported: "The arrival of a large shipment of wine sent directly to India by the wealthy owner of a vineyard has caused a stir." When the unsold part of a shipment came back to the estate, the wine had aged well at sea, and this selection was labeled 'R' for 'Retour des Indes,' or 'Returned from India.' His passion for the exotic earned him the nickname 'Maharajah of Saint-Estèphe,' and the India connection inspired the pagoda-topped architecture that still defines the estate. Burdened by debt, d'Estournel sold the estate in 1852. Bordeaux's negociants had designated his wine a Deuxième Grand Cru du Médoc in his lifetime; he died two years before the 1855 Classification confirmed Cos d'Estournel as a Second Growth. Ownership then passed through several hands, including the Martyns family of London and the Charmolue family, owners of neighboring Château Montrose. Fernand Ginestet bought the estate in 1917, and decades later his grandchildren, including Bruno Prats, took over ownership and management. Bruno Prats ran the estate until 1998, when he sold it to the Merlaut family of the Taillan Group; Michel Reybier acquired Cos d'Estournel in 2000. Reybier hired Jean-Guillaume Prats to manage the estate; Prats left in 2012 and was succeeded by Aymeric de Gironde, formerly marketing director of Châteaux Pichon Longueville, Suduiraut and Petit Village. The 'Parcelle des Femmes,' a Merlot plot planted by the women of the estate while the men fought in World War I, is now over a century old and remains a cornerstone of the blend. Its 2015 Merlot became COS100, bottled only in ten 12-liter Balthazars and 100 3-liter Double Magnums.

• Founded in 1811 by Louis-Gaspard d'Estournel, who inherited Cos in 1791 and expanded the vineyard from 14 to 45 hectares
• Wine sent to India by 1838, including the 'Retour des Indes' bottles aged at sea, inspired the pagoda architecture and the nickname 'Maharajah of Saint-Estèphe'
• Sold in 1852; d'Estournel died two years before the 1855 Classification confirmed the estate as a Second Growth
• Later owners: the Martyns and Charmolue families, Fernand Ginestet (1917) and his grandchildren including Bruno Prats, the Merlaut family (1998) and Michel Reybier (2000)
• The 'Parcelle des Femmes,' planted by the estate's women during World War I, is over a century old and produced the rare 2015 COS100

Cos d'Estournel lies in the southern part of Saint-Estèphe in the northern Médoc, bordering Pauillac; the narrow Jalle du Breuil stream separates its vineyards from Château Lafite Rothschild. Saint-Estèphe is the northernmost village appellation of the Médoc, set between the Gironde Estuary and the Atlantic Ocean, and its oceanic climate tempers extreme weather. The name 'Cos' comes from the old Gascon word for 'hill of pebbles,' and the estate is built around a plateau of deep gravel and two hills with eastern and south-southwestern exposures. The vineyard covers about 100 hectares. Cabernet Sauvignon accounts for two-thirds of plantings and grows on the highest, best-drained parts of the plateau; Merlot sits mostly to the east on clay-limestone soils, with small amounts of Cabernet Franc and Petit Verdot. Vines are planted at 8,000 to 10,000 per hectare and average 45 years old, with some of the oldest dating to the early twentieth century; vines used for the Grand Vin average 55 years. A 2001 soil-mapping study identified nearly twenty distinct soil variants, and each vine-grower tends the same ten plots, about 40,000 vines, year after year.

• Southern edge of Saint-Estèphe, bordering Pauillac; the Jalle du Breuil stream separates it from Château Lafite Rothschild
• About 100 hectares on gravel plateau and hillside soils: two-thirds Cabernet Sauvignon, most of the rest Merlot
• 8,000 to 10,000 vines per hectare; vines average 45 years across the estate and 55 years for the Grand Vin
• A 2001 soil study mapped nearly twenty soil variants; each grower tends the same ten plots (about 40,000 vines) every year

In 2003 Cos d'Estournel installed isothermal, truncated-cone stainless steel vats, the first time a vineyard chose steel while seeking to keep certain qualities associated with wood. A fleet of 84 vats now handles the winemaking, with parcel-by-parcel vinification. In 2008 the estate built a vat room based entirely on gravity, with four vats encased in glass elevators, so that grapes, juice and wine move from harvest reception to bottling without pumping. The gravity-fed winery covers about 2,000 square meters and was completed in 2008 and 2009; the main building was renovated in 2008, and the cellar is built underground and insulated to minimize environmental impact and maximize energy efficiency. Beneath the vat room, the barrel cellar holds about 1,500 wooden barrels at a maximum of 15°C (59°F) to preserve freshness. The Grand Vin blend varies by vintage but generally runs two-thirds Cabernet Sauvignon to one-third Merlot, from vines averaging 55 years, aged in 80% new oak. The estate set up its own wastewater treatment facility in 2001 because it is surrounded by marshland, and it was certified HVE (High Environmental Value) in 2019 and ISO 14001 in 2020.

• Isothermal, truncated-cone stainless steel vats since 2003; 84 vats today for parcel-by-parcel vinification
• 2008 gravity-flow vat room, with four vats in glass elevators, removed pumping from harvest reception to bottling
• Barrel cellar beneath the vat room holds about 1,500 barrels at a maximum of 15°C; the Grand Vin ages in 80% new oak
• Own wastewater treatment facility since 2001; certified HVE in 2019 and ISO 14001 in 2020

Millesima describes the Grand Vin as dense, deep and intensely aromatic, with spicy notes balanced by rich fruit, silky tannins and a long, structured finish. Tasting notes across recent vintages return to black tea, black pepper, licorice and warm spice alongside darker fruit: the 2021 opens with black tea and black pepper before red berries, blackberry and black fig, balanced by subtle mineral notes, while the 2019 shows cinnamon and jasmine over fine mineral notes. Other vintages lean toward blackcurrant, blackberry and nutmeg with vivacious mineral notes. Independent tasting notes also record licorice, smoke, dark chocolate and Indian spice, with sweet, lingering fruit and polished tannins. The 2016, a blend of 76% Cabernet Sauvignon, 23% Merlot and 1% Cabernet Franc, scored 100 points from both Robert Parker's Wine Advocate and James Suckling; the 2009 scored 100 points from Robert Parker's Wine Advocate.

• Millesima describes the style as dense, deep and intensely aromatic, with rich fruit, silky tannins and a long, structured finish
• Recurring aromas: black tea, black pepper, licorice, cinnamon, jasmine, blackcurrant and spice, over mineral tension
• Licorice, smoke, dark chocolate and Indian spice also appear in independent tasting notes, with sweet fruit and polished tannins
• The 2016 (76% Cabernet Sauvignon, 23% Merlot, 1% Cabernet Franc) scored 100 points from Robert Parker's Wine Advocate and James Suckling; the 2009 scored 100 points from Robert Parker's Wine Advocate

Cos d'Estournel was classified a Second Growth (Deuxième Cru) in the 1855 Bordeaux Classification. The estate makes six wines. The Grand Vin, Château Cos d'Estournel, blends about two-thirds Cabernet Sauvignon with one-third Merlot from vines averaging 55 years, varying by vintage; the 2023 was 65% Cabernet Sauvignon, 33% Merlot and 1% each Cabernet Franc and Petit Verdot. Les Pagodes de Cos, the second wine, dates from the 1994 vintage and comes from a dedicated terroir of vines averaging about 40 years. Cos d'Estournel Blanc, a white first made in 2005, blends about 80% Sauvignon Blanc and 20% Sémillon, and a second white, Pagodes de Cos Blanc, sits alongside it. G d'Estournel is a Merlot-led wine from the northern Médoc, with high-density Cabernet Sauvignon plantings added from 2012. Goulée by Cos d'Estournel comes from a separate vineyard near the Gironde Estuary. Since acquiring Cos d'Estournel in 2000, Michel Reybier has added four properties to Domaines Reybier: the Hétszőlő estate in Hungary (2009), a Champagne cuvée (2013), La Mascaronne in Provence (2020) and Lauzade, also in Provence (2021).

• Second Growth (Deuxième Cru) in the 1855 Classification
• Portfolio: Château Cos d'Estournel (Grand Vin), Les Pagodes de Cos (second wine, since 1994), Cos d'Estournel Blanc (since 2005) and Pagodes de Cos Blanc, G d'Estournel, and Goulée by Cos d'Estournel
• Cos d'Estournel Blanc: about 80% Sauvignon Blanc, 20% Sémillon
• Domaines Reybier also includes Hétszőlő in Hungary (2009), a Champagne cuvée (2013), and La Mascaronne (2020) and Lauzade (2021) in Provence

Cos d'Estournel's density and spice suit long cellaring; the Grand Vin comes from vines averaging 55 years and ages in 80% new oak. Its black pepper, licorice and dark spice call for equally assertive dishes. Roast or grilled lamb with herbs plays against the spice and structure, and dry-aged beef stands up to the tannic grip. Tasting notes also record leather, tobacco and incense, which suit game such as venison and mushroom- or truffle-led dishes. Aged hard cheeses match the wine's structure and length.

• Roast or grilled lamb with herbs, against the wine's spice and tannic structure
• Dry-aged beef, for the wine's density and grip
• Venison and mushroom or truffle dishes, alongside the wine's leather, tobacco and spice notes
• Aged hard cheeses, for the wine's structure and length

Primary sources (producer's own site): https://www.estournel.com/en/, https://www.estournel.com/en/cos/a-magnificent-plot/, https://www.estournel.com/en/cos/a-most-singular-estate/, https://www.estournel.com/en/cos/commitment-louis-gaspard-destournel/, https://www.estournel.com/en/cos/commitment-loyalty/, https://www.estournel.com/en/cos/commitment-michel-reybier/, https://www.estournel.com/en/cos/daring-dedication/, https://www.estournel.com/en/cos/daring-determination/, https://www.estournel.com/en/cos/daring-innovation/, https://www.estournel.com/en/cos/terroir-diversity/, https://www.estournel.com/en/cos/terroir-inimitable-style/, https://www.estournel.com/en/cos/terroir-remarkable-vineyard/, https://www.estournel.com/en/cos/wines-cos-destournel/, https://www.estournel.com/en/cos/wines-cos-destournel-blanc/, https://www.estournel.com/en/cos/wines-pagodes-de-cos/, https://www.estournel.com/en/cos/wines-gdestournel/, https://www.estournel.com/en/cos/wines-goulee-by-cos-destournel/, https://www.estournel.com/en/cos/vin-cos100/, https://www.estournel.com/en/visit/, https://www.estournel.com/en/home/cos-chronicle/une-responsabilite-environnementale/. Secondary sources: https://www.millesima-usa.com/blog/chateau-cos-d-estournel-iconic-saint-estephe-second-growth-wine.html, https://www.thewinecellarinsider.com/bordeaux-wine-producer-profiles/bordeaux/st-estephe/cos-destournel/, https://www.vinovest.co/blog/cos-destournel. Last verified 2026-10-12. Where the producer's site and a secondary source disagree, the producer's site governs.