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
Bordeaux wine regions Bordeaux's production uses these generic appellations. Red wine produced under the Bordeaux AOC is made mostly from Cabernet Sauvignon and Merlot, with the addition of Cabernet Franc and small amounts of Petit Verdot, Malbec and Carmenère. This appellation covers around 42,600 hectares of vines and produces around 223 million litres of wine (which is nearly a third of the total wine production of Bordeaux). White wine produced under the Bordeaux Sec AOC is made mostly from Sauvignon blanc and Sémillon, with the addition of some Muscadelle, Colombard, Mauzac, Merlot blanc, Ondenc and Ugni blanc. It must contain no more than