Sours are among the oldest of cocktail recipes, known for the mixture of a strong spirit, a sweetener of your choice, and the sour element of lemon or lime – while an egg white in the mixture adds richness, without affecting the flavor.

Get the recipe and technique down pat with help from bartender Dustin Haarstad as he shows you how to make a Whiskey Sour.

Servers and beginner bartenders, learn hospitality skills for today’s world with help from the pros!