visit of undergrounds caves with barrels, tanks, bottles on wooden racks, traditional making of champagne sparkling wine in cote

barsuraube barsurseine alcohol ambonnay background barrels basement beverage blanc bottle cave cellar champagne cote des bar drink epernay europe ferment fermentation france french grand cru interior landmark maille manufacturing old passage path production rack reims rows sparkling sparklingwine tank tasting traditional underground urville vintage wall wine making winecellar winemaking winery visit undergrounds caves tanks bottles wooden racks south