noir. Ruinart's cellars, acquired in 1768, are amongst the largest in the region, and are Gallo-Roman in origin. Like most Champagne cellars, they are the product of ancient chalk mining, and extend 38 metres below the ground and are 8 km long. The chalk helps to keep the cellars at a constant 11 degrees Celsius. The chalk pits were classified as a historic monument in 1931. The Ruinart taste is greatly dependent on the aging in chalk pits: three to four years for non-vintages, and nine to 10 years on average for a vintage Ruinart. The Ruinart bottle is inspired by the first champagne bottles of the 18th century. See also List of Champagne houses References Champagne producers LVMH brands French brands