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
French language order to kill the Breton language" were instructions given from a French official to teachers in the French "department" of Finistère (western Brittany). The prefect of Basses-Pyrénées in the French Basque Country wrote in 1846: "Our schools in the Basque Country are particularly meant to substitute the Basque language with French...". Students were taught that their ancestral languages were inferior and they should be ashamed of them; this process was known in the Occitan-speaking region as Vergonha. Among the historic reformers of the French language, such as Louis Maigret, Marle M., Marcelin Berthelot, Philibert Monet, Jacques Peletier du Mans, and