97 James Suckling 

Aromas of sliced pears, green apple, matchstick, and dried papaya follow through to a full body with a solid core of fruit and phenolics that give it structure and tightness. Slightly chewy at the end. Very structured. Give this time to open and show its true self. Try after 2026.

95 Jeb Dunnuck

The Grand Vin in white, the 2021 Château Cos D'Estournel Blanc includes slightly more Semillon and is 71% Sauvignon Blanc and 29% Semillon raised in 8% new barrels. It's a slightly more closed and tight white, revealing beautiful citrus fruit that gives way to more mint, floral, and chalky mineral-like nuances with air. Medium-bodied and balanced, it plays in the fresher style of the vintage but is still concentrated and serious, and it will benefit from a year or three of bottle age. It’s built for the cellar and will benefit from 2-3 years and drink well for at least a decade. This is 12.3% alcohol with a pH of 3.13.

94 Vinous

The 2021 Cos d'Estournel Blanc is a big wine—rich, dramatic and expressive. Low yields in 2021 created a white that is deep, layered and quite potent in feel. Tangerine peel, citrus confit, marzipan and a touch of new oak give the 2021 a decidedly flamboyant, extroverted personality. –Antonio Galloni

94 Decanter

Green apple skin, gooseberry and soft floral nuances. Lovely juicy core, high but balanced acidity gives the life while the toasted, quite bitter (grapefruit, orange, wood) elements come in towards the mid palate giving extra layers of nuance and depth and interest. It's not complete yet but good potential. Feels clean and precise and well worked. Maybe loses a touch of push and persistence on the finish, but there's nice purity and vibrancy from start to finish.

93 Robert Parker's Wine Advocate

Gently reductive aromas of pear, nectarine and gooseberry introduce the 2021 Cos d'Estournel Blanc, a medium to full-bodied, ample and satiny wine that's seamless and enveloping, with a bright spine of tangy acidity. As readers may remember, it's a blend of 71% Sauvignon Blanc and fully 29% Sémillon.