cognac means: This is the best brandy. After fermentation, Cognac undergoes double distillation. The minimum 3 year aging period in Limousin oak begins. (in Cooking Dictionary)
What else does cognac mean?
Fine brandy made in the region of Cognac, western France. (in Cooking Dictionary)
Brandy made from white wine, and is produced near Cognac. (in Merlin Dictionary)