A whiskey sour is a mixed drink or shot containing whiskey, lemon juice, and simple syrup, and traditionally garnished with a cherry or sometimes a lemon wedge. It is a blend of sour, bitter, and sweet flavors.
Sometimes, an egg white is included, which is sometimes called a Boston sour. When the whisky used is a Scotch, it is called a Scotch sour. With a few bar spoons of full-bodied red wine floated on top, it is usually referred to as a New York sour. It is shaken and served either straight up or over ice.
The International Bartenders Association recipe includes a garnish of half an orange slice and a maraschino cherry.
A variant of the whiskey sour is the Ward 8, which often is based on bourbon or rye whiskey, and includes both lemon juice and orange juice, and grenadine syrup as the sweetener. The egg white sometimes employed in other whiskey sours is not usually included.