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
Bordeaux wine confluence of the Dordogne and Garonne Rivers, which flow into the Gironde. These rivers define the main geographical subdivisions of the region: In Bordeaux the concept of "terroir" plays a pivotal role in wine production with the top estates aiming to make "terroir" driven wines that reflect the place they are from, often from grapes collected from a single vineyard. The soil of Bordeaux is composed of gravel, sandy stone, and clay. The region's best vineyards are located on the well-drained gravel soils that are frequently found near the Gironde river. An old adage in Bordeaux is the best estates