What is viski sour?

Whiskey Sour is a classic cocktail made with whiskey, lemon juice, sugar, and optionally, egg white. It is typically served over ice and garnished with a cherry and/or an orange slice. This cocktail has been around since at least the mid-1800s and continues to be a popular choice for whiskey drinkers. Variations of the Whiskey Sour may include different types of whiskey or the addition of bitters.