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 4g/l of residual sugar. This appellation covers around 6500 hectares of vines and 38 million litres of wine. If it has more than 4g/l of residual sugar, then it may be labelled as Bordeaux Molleux AOC, but little wine is in fact produced under this AOC. Bordeaux Supérieur AOC covers both red and white wines, and the grapes used are the same, but permitted yields are slightly lower, minimum alcohol content is slightly higher and slightly longer aging is required. The amount of red wine produced under this appellation (around 45 million litres, from 10,000 hectares of vines) is much