Speaking generally, Cognac is a type of brandy in much the same way that bourbon is a type of whiskey. Brandy is the genre of liquor, Cognac is a specific type of alcohol within that genre.

Related: What’s the Difference Between VS, VSOP, and XO Cognac? Both brandy and whiskey are very diverse categories of spirits that can be enjoyed in a multitude of ways. Understanding what each ...

This means it's quite possible you've enjoyed brandy in the past without realizing it actually was brandy. For example, most people know Cognac and ... be subbed out for whiskey in a lot of ...