Bourbon whiskey, a type of American whiskey, is characterized by its primary ingredient, corn, which must make up at least 51% of the grain mixture according to U.S. regulations. It is aged in new charred oak barrels, giving it a distinctive caramel and vanilla flavor profile, often with hints of spice and oak. This aging process also imparts a rich amber color to the whiskey.

When used in cocktails, bourbon whiskey serves as a versatile base spirit that adds depth and complexity to a wide range of drinks. Classic cocktails like the Old Fashioned and the Manhattan highlight bourbon's robust flavors, while modern creations often use it to bring warmth and richness. Its smooth yet bold profile pairs well with ingredients like bitters, citrus, and sweet syrups, making it a popular choice for both traditional and innovative cocktail recipes.