Acids in wine responsible for the sour taste of vinegar. During fermentation, activity by yeast cells naturally produces a small amount of acetic acid. If the wine is exposed to oxygen, "Acetobacter" bacteria will convert the ethanol into acetic acid. This process is known as the “acetification” of wine and is the primary process behind wine degradation into vinegar. An excessive amount of acetic acid is also considered a wine fault. A taster's sensitivity to acetic acid will vary, but most people can detect excessive amounts at around 600 mg/l. Ascorbic acid, also known as vitamin C, is found in young wine grapes
History of French wine of Hautvillers, located north of Épernay with his role including management of the abbey's vineyard holdings and the collection of tithes from the community in the form of grapes and wines. Dom Perignon took the wine from all these sources and blended them to produce a wine that fetched far higher prices than wines from other parts of Champagne. Perignon's practice of blending from several different vineyards was unique and largely unheard of till then. He also pioneered the practice of severe pruning in the vineyard to keep yields low. History of French wine The history of French wine, spans