Bordeaux wine almost universally used. Chaptalization is permitted, and is fairly common-place. Fermentation then takes place, usually in temperature controlled stainless steel vats. Next the must is pressed and transferred to barriques (in most cases) for a period of ageing (commonly a year). The traditional Bordeaux barrique is a 225 litre oak barrel. At some point between pressing and bottling the wine is blended. This is an integral part of the Bordeaux wine making process, as scarcely any Bordeaux wines are varietals; wine from different grape varieties is mixed together, depending on the vintage conditions, so as to produce a wine in
South West France (wine region) Gironde estuary) and their tributaries, as well as the wine-producing areas of Gascony including Béarn, and the Northern Basque Country. However, only areas closer to the Atlantic than to the Mediterranean are included in the region, with the city of Toulouse being situated roughly halfway between the South West wine region and the Languedoc-Roussillon wine region on the Mediterranean. The brandy-producing region Armagnac is situated within Gascony and the wine region of South West France, and some of its grapes are used to make Vin de Pays under the designation "Vin de Pays de Côtes de Gascogne" or mixed with