Giscours own a bit of vineyard over the borderline from Margaux so they can’t include it in their grand vin, or any other wine labelled Margaux for that matter. Hence the name.
Yet this Haut-Medoc shows Margaux character. Which is a bit of a surprise given the strong character of the vintage. Restrained oak lets the fruit sing, cassis and a touch herbaceous (in spite of the intense ripeness). Reminds me of Hawkes Bay NZ.
Another wine at a quality level far above its price due to the 2009 vintage.