As a lover of brandy, I know the subtle differences between cognac and brandy. Although they all belong to the broad category of brandy, they are unique in many aspects. First of all, the origin is the primary difference between cognac and brandy. In terms of raw materials, cognac has strict requirements for the grapes it purchases. In terms of production technology, cognac is double steamed and aged in oak barrels for a long time. As far as quality and flavor are concerned, cognac is undoubtedly the representative of elegance.