94 Points Robert Parker Wine Advocate
Blended of 78% Cabernet Sauvignon, 20% Merlot and 2% Petit Verdot, the 2006 Cos d’Estournel is deep garnet colored with a touch of brick, opening with enticing scents of rosemary-crusted roast lamb, dried cherries, baked blackcurrants and mincemeat pie with touches of fallen leaves, cigar box and pencil lead. Medium-bodied, lively and elegantly played in the mouth, it has a firm backbone of chewy tannins and plenty of mineral accents on the long finish.
95 Points Wine Spectator
Cos d’Estournel has softened those austere Saint-Estèphe tannins and produced a wine that is all opulence and roundness. The tannins are certainly there, but they come through as big, bold richness. The power suggests it will age well, but for drinking earlier, the freshness of the sweet homemade plum jam promises well.