Egg-based cocktails are drinks that incorporate eggs, typically using egg whites or yolks to create a unique texture and flavor. The egg whites are often whipped to add frothiness, while yolks can enrich the drink's taste. These cocktails are known for their creamy consistency and smooth mouthfeel, making them a popular choice in mixology. Classic examples of egg-based cocktails include the Whiskey Sour and the Pisco Sour. Bartenders often use fresh eggs to ensure quality and safety, and the use of egg in cocktails dates back to the 19th century, showcasing a long-standing tradition in cocktail culture.