Pol Roger, one of a few luxury Champagne firms still family-owned, was established in Epernay in 1849. Pol Roger owns 200 acres of vineyards, which provide about 45% of their needs. Pol Roger’s cellars extend over four miles of winding chalk passageways on two levels. The second or deeper cellar maintains a constant 9.5º C (50º F), one degree lower than the first level and most others in the region. This lower temperature slows the second fermentation, encouraging a finer mousse or bubbles. Pol Roger Champagne also spends two to three times the allowable minimum in the cellar before disgorgement, or about three years for the non-vintage and up to seven for the luxury cuvées. The long, slow maturation contributes greatly to the complex aromas, which distinguish these superb Champagnes.