Sour Family

The Sour family is one of the most productive and durable templates in cocktail history. Its three-part structure — a base spirit, an acidic citrus element, and a sweetener — provides the foundation for hundreds of classic and contemporary drinks.

The first written recipes for sour cocktails appear in Jerry Thomas's Bar-Tender's Guide, published in 1862. Thomas documented a Brandy Sour, a Gin Sour, and a Santa Cruz Sour (using rum from Santa Cruz), establishing the category as a distinct family. Cocktail historian David Wondrich describes sours as descendants of the older punch tradition, calling them among the "Children of Punch" — a punch formula scaled down to an individual serving.

The roots of the sour extend even further back. British Navy sailors mixed rum with lime juice and sugar to combat scurvy during long voyages, creating Grog. This combination of spirit, citrus, and sweetener — essentially a sour — made its way ashore and into the early American saloon scene.

The standard Sour formula is typically 2 parts spirit to 1 part citrus to 1 part sweetener, though individual recipes vary. Egg white is frequently added to create a creamy foam and rounder mouthfeel, though this is a modern enhancement rather than original to the format.

Within the Sour family there are numerous sub-families. The Daiquiri uses rum, lime, and sugar. The Margarita uses tequila, lime, and triple sec. The Gimlet uses gin and lime cordial or fresh lime. The Sidecar uses Cognac, lemon, and Cointreau. The Bee's Knees uses gin, lemon, and honey syrup. Each follows the same structural logic while expressing the character of a different base spirit and sweetener combination.

A balanced Sour is considered one of the best tests of a bartender's technical skill.