Clos Cazals may be one of Champagne’s best-kept secrets. It sits tucked away in the Mesnil-sur-Oger, a Grand Cru village that is located in the Côte des Blancs just south of Epernay. In Champagne, a village is considered Grand Cru when it has been scored 100% by the CIVC (Comité Interprofessionnel du Vin de Champagne) for the quality of its grapes, a stringent and highly acclaimed achievement. Mesnil-sur-Oger has undoubtedly earned that accolade, evident in its Chardonnay grapes that thrive in these unique soils. Here, the soils can look almost blindingly white due to a higher content of chalk relative to most other villages in Champagne. One lesser known secret is that a substrata of Kimmeridgian soils are at their strongest concentration between Mesnil-sur-Oger and Avize, neighboring towns to the south and north, respectively. The Blanc de Blancs produced in this small village are amongst the world’s top echelon sparkling wines.