2025 Château Cos d'Estournel Blanc

EXCLUSIVE - EXPECTED EARLY 2028

Winery Château Cos d'Estournel

Château Cos d'Estournel belongs to the absolute elite of Bordeaux and is considered one of the most iconic estates of Saint-Estèphe. The château, known for its Oriental architecture and famous pagodas, was created by Louis-Gaspard d'Estournel, who, in the early 19th century, combined his vision of wine with influences from distant trade routes. Since 2000, the estate has been led by Michel Reybier, with innovation, terroir expression, and precision work at the forefront. In addition to the famous red Grand Vin, Cos d'Estournel Blanc has also become one of the absolute top white Bordeaux wines. More information about this winery can be found under the Winery tab.

Region, climate and location

Cos d'Estournel Blanc is produced in the northern Médoc, near the mouth of the Gironde. Unlike many other white Bordeaux wines, this terroir benefits from a relatively cool microclimate, combined with natural ventilation from the Atlantic Ocean. This ensures an exceptional aromatic profile and the preservation of freshness, even in warm years. The soils consist of a combination of calcareous clay and gravel, with the calcareous terroirs in particular playing a key role in the tension and precision of the wine.

The 2025 vintage saw early vine development, a recurring theme throughout the entire growing season. Significant rainfall in April was followed by a warm and dry summer. Nevertheless, the balance was maintained thanks to cooling from the Gironde and well-timed rain in late August. Notably, Cos d'Estournel Blanc has never been harvested so early since the wine's introduction in 2005, between August 25 and September 3. Despite the warm conditions, tension, freshness, and aromatic precision remained fully intact.

Vineyards and grape varieties

The blend of Cos d'Estournel Blanc 2025 consists of 56% Sauvignon Blanc and 44% Sémillon. The relatively high proportion of Sémillon plays an important role this year, lending extra depth, texture, and layering to the wine. Sauvignon Blanc provides tension, aromatic precision, and the pronounced freshness for which Cos Blanc is known. The calcareous clay soils perform exceptionally well in 2025 and enhance the linear tension of the wine. The estate has been investing for years in replanting and plot rotation, focusing on optimal terroir expression. Thanks to plot-specific vinification, each component of the blend can individually contribute to complexity and balance. Furthermore, the proximity of the Gironde ensures natural temperature regulation, essential for a wine of this precision.

Harvest, vinification and aging

The harvest of Cos d'Estournel Blanc took place exceptionally early, from August 25 to September 3, the earliest since the first vintage in 2005. The low yields helped keep the grapes optimally concentrated and healthy, despite the warm and dry conditions of the season. Thanks to the cooling influence of the Gironde, the freshness was preserved excellently. In 2025, the wine achieves approximately 13.17% alcohol, a pH of exactly 3.00, and a very high total acidity of 4.9. This explains the striking tension and liveliness noted by several wine journalists. The combination of ripe fruit and exceptional freshness makes this one of the most precise white Bordeaux of the year.

Color, smell and taste

Cos d'Estournel Blanc 2025 immediately stands out for its immense tension and aromatic layering. The aroma opens with fresh citrus, dried citrus peel, lime, and grapefruit, followed by honeysuckle, white flowers, and subtle floral nuances. Behind this, layers of ripe pear, white peach, and a refined chalky minerality emerge.

On the palate, the wine is full and concentrated, yet at the same time exceptionally energetic. The high acidity lends an almost electric tension to the wine, without ever becoming austere or harsh. James Suckling even speaks of an “electrifying acidity” and cautiously suggests that this might well be the best Cos d'Estournel Blanc ever. That combination of ripe fruit, tension, and depth is very impressive.

The relatively high proportion of Sémillon provides texture and breadth in the mid-palate, while Sauvignon Blanc ensures lift, precision, and length. The finish is very long, tight, and mineral, with citrus oil, floral notes, and a refined salinity that lingers. Neal Martin particularly emphasizes the fine tension and persistent finish, while Antonio Galloni praises the combination of power and mid-palate richness.

Development and drinking window

Cos d'Estournel Blanc 2025 has the concentration and structure to age beautifully, yet possesses enough charm to impress even when relatively young. In the first few years, citrus, floral notes, and tension dominate. With additional bottle aging, more complex aromas of honey, beeswax, dried citrus, and subtle spiciness will emerge. A drinking window from approximately 2028 to 2045 seems realistic. In top condition, this wine can likely continue to mature for even longer.

Summary of professional reviews

98-99 points – James Suckling: calls this a spectacular wine with electric acidity, enormous depth, and possibly the best Cos Blanc ever. 92-94 points – Neal Martin, Vinous: praises the tension, persistent finish, and focus. 90-93 points – Antonio Galloni, Vinous: emphasizes power, drive, and rich texture in the mid-palate. 93-95 points – Adrian van Velsen, Vinum: once again ranks the wine among the best white Médoc wines. The full review texts can be found in the tab: Professional reviews.

Wine & Food Pairing and Discount

If available, you will find the official factsheet and additional information about this fine wine in the 'Attachments' tab. We will automatically send these to you upon ordering this wine. The wine is stored in our climate-controlled Wine Warehouse, and if you come to collect the wine, you will often receive a nice discount. You will see your discount immediately when you select 'Pick up' on the checkout page. We are located in Dordrecht, situated almost next to the A16 with ample parking. Click here for our address.

You can read full wine reviews from Parker, Suckling, Vinous, and Wine Spectator, among others. Need advice on finding the ideal wine for your dish? Click here for our exclusive Sommelier. Free for Grandcruwijnen customers. In the Food tab, you will find advice on what to look for for the right food and wine pairing, and a number of dish suggestions from our Sommelier.