What is the base spirit in a Whiskey Sour?

The base spirit in a Whiskey Sour is whiskey, which is the foundation of this classic cocktail. A Whiskey Sour is traditionally made by combining whiskey with lemon juice and a sweetening agent, such as simple syrup or sugar. The whiskey contributes its distinct flavor profile, which can vary depending on whether bourbon, rye, or another type of whiskey is used. The tartness of the lemon juice balances the richness of the whiskey, creating a well-rounded and refreshing drink.

Whiskey is specifically chosen due to its robust character that marries well with the acidity of the citrus, making it an essential ingredient in the cocktail. The popularity of this drink highlights whiskey's versatility and its ability to be enjoyed in various mixed forms while maintaining its core flavor.