Viticulture The science and art of grape growing, as distinguished from viniculture , the science of wine-making. Vinification Winemaking, including all the operations and processes involved. Vintage Year of vinification. The variety of American oak which is used to manufacture barrels Yeast Promotes fermentation of grape juice. The 'dust' on a grape, known as the 'bloom' is wild yeast.
Most wine makers prefer to use their own yeast strains.
Zero Dosage Dosage is the mixture of sugar, wine and sometimes brandy, that is added back to Methode Champenoise wines to create the sparkle through secondary fermentation. Zero dosage is a blend of wines that contains no sugar, thus creating the driest style sparkling wine.