sentences:  The winery is conceived around a gravity flow system and features a laboratory and an aging cellar of 5,000-barrel capacity cut into the adjacent mountainside.The wines can be aged in the 80 stainless steel vats, or any combination of the 3,700 Bordeaux-type 225-litre barrels, which are 80% French oak, 20% American oak.Of the French oak, some are derived from Limousin forests, while others are cut from Allier trees.