Cognac (/ˈkɒn.jæk/ KON-yak, also US: /ˈkoʊn-, ˈkɔːn-/ KOHN-, KAWN-, French: [kɔɲak] ) is a variety of brandy named after the commune of Cognac, France. It is produced in the surrounding departments of Charente and Charente-Maritime, in an officially designated wine-growing region. This region is divided into six districts with different cognacs produced in each.
Cognac production falls under French appellation d'origine contrôlée (AOC) designation, with production methods and naming required to meet certain legal requirements. Among the specified grapes, Ugni blanc, known locally as Saint-Émilion, is most widely used. The brandy must be twice distilled in copper pot stills and aged at least two years in French oak barrels from Limousin or Tronçais, Allier or Nevers – the majority coming from the first two. Cognac matures in the same way as whiskies and wines barrel-age, and most cognacs spend considerably longer "on the wood" than the minimum legal requirement.