Behind a patchwork of buildings in Mareuil-sur-Aÿ, a so-called ‘commune déléguée’ in the Vallée de la Marne, a single hectare of south-southeast facing Pinot Noir vines produce arguably one of the world’s most vinous and critically-acclaimed Champagnes. Le Clos Saint-Hilaire, its name lent from the local church of Église Saint-Hilaire, belongs to ‘super grower’ Billecart-Salmon. Though the commune itself is classified premier cru, albeit amongst only two villages to have scored 99% in the Échelle des Crus classification framework, seventh-generation CEO, Mathieu Roland-Bilecart has his own views on the cru framework. Views which are certainly emboldened by this tiny parcel off the Boulevard du N. Having produced only five vintages since it’s first as a standalone bottling in 1995, you’d be forgiven for underestimating the extent to which this outwardly humble site continues to shape the houses persistent and determined evolution. Pointing toward the vineyards scattering of pumpkins and wool-laden residents, Mathieu describes the site as his research and development facility. Shortly after this years harvest, Mathieu and I wondered the site discussing in more detail its extended importance.