Regional Bordeaux AOCs surface. Maximum authorized yield is 55 hectolitres per hectare. The authorized grape varieties are the same as red Bordeaux AOC although Merlot is the most common of this AOC. Production requirements and statistics for the various regional AOCs are as follows: Regional Bordeaux AOCs In the Bordeaux wine region there are seven regional "Appellations d'origine contrôlée" (AOCs) that may be used throughout the Gironde department. These are Bordeaux Rouge AOC, Bordeaux Supérieur Rouge, Bordeaux Clairet, Bordeaux Rosé, Bordeaux Blanc, a dry white, Bordeaux Supérieur Blanc, a sweet white, and "Crémant de Bordeaux", a sparkling méthode traditionnelle wine. The regional appellations
History of Bordeaux wine Bordeaux's most prestigious estates and Pierre de Rauzan laid the foundation for Château Rauzan-Ségla, Château Rauzan-Gassies, Château Pichon Longueville Baron, and Château Pichon Longueville Comtesse de Lalande. In 1855, a classification system was set up that ranked the top chateaus of the Médoc according to their market price. From 1875–1892 almost all Bordeaux vineyards were ruined by Phylloxera infestations. The region's wine industry was rescued by grafting native vines on to pest-resistant American rootstock from Augusta, Missouri, the first viticultural region in the United States. All Bordeaux vines that survive to this day are thanks to this action. Some grape