Brandy Sour

A refreshing citrus-forward cocktail balancing the warmth of brandy with bright lemon and sweetness.

The Brandy Sour is the cognac-and-citrus expression of one of the most structurally fundamental cocktail formats in the American bartending tradition. The sour — spirit, lemon juice, and sugar — is essentially the three-ingredient distillation of the Classical punch formula, stripping away the water and spice components to concentrate the balance of spirit, acid, and sweet in a single serving. Jerry Thomas documented Sours in his 1862 Bar-Tenders Guide and presented them across multiple spirit bases including brandy, whiskey, and gin. Cognac's particular compatibility with lemon juice is well-established in cocktail culture: the Sidecar — cognac, Cointreau, and lemon juice — is the Brandy Sour's most famous elaboration and was documented as a cocktail staple by the early 1920s. The Brandy Sour without Cointreau is the more stripped-down version, using only the three sour components, and the result showcases the cognac's fruit and oak character more directly than the Cointreau-enriched version. The addition of egg white creates the Boston-style variation — silky foam, extended mouthfeel, and the creamy texture that the Victorians associated with the highest quality egg-enriched cocktails. The Brandy Sour enjoyed renewed popularity during the early 21st century craft cocktail revival, which systematically recovered pre-Prohibition spirit categories and reestablished brandy as a serious cocktail base alongside bourbon, rye, and gin.