Whiskey is one of your bar’s most essential spirits. In fact, you should probably have at least three whiskeys on hand: a bourbon, a scotch, and another variety (such as Irish whiskey, Tennessee whiskey, or rye).

Ah, whiskey. Few spirits are so complex in their taste and so diverse in their varieties. Although scotch has long been famed for its diversity, its American cousin bourbon has as much history and unique character. You just have to approach it with the knowledge of what you’re tasting.