'The Clos Saint Jacques is implicitly recognised as a Grand Cru, but was overlooked at the time of the official AOC Grand Cru classification; it belonged to the Comte de Moucheron, a fervent royalist who refused to allow his land to become part of the Republican classification system.
The soil of this vineyard is extremely fertile and very stony. The top of the Clos is ostrea acuminata marl. The shallow clay topsoil allows the water to run down the slope following the strata of marl and this gives fullness and typicity to the wines.
Halfway down the slope the soil is deeper (about 60cm), and lies on crinodial Bajocian limestone. The soil is rich in clay and limestone rock.
The Prémeaux limestone at lower end of the vineyard makes the soil rich in limestone rock and shale.
The wines from this terroir are clear and balanced with strong, smooth tannins and a dominant aroma of blackcurrant and small black fruits. They have a particularly intense mouth-feel.' - Domaine Armand Rousseau