A citrus and sour brandy cocktail ∙ Dry shake ∙ 5 min ∙ 15.5% ABV ∙
The Southern Border is a blue Pisco Sour of pisco, blue curaçao, lime juice, sugar syrup and egg white, shaken and topped with drops of Creole-style bitters.
The Southern Border was created by New York City bartender Pamela Wiznitzer at the Dead Rabbit, dated to 2014. It was conceived as an American riff on the Pisco Sour, keeping that classic's pisco, lime, and egg-white base but adding blue Curaçao to turn the drink a bright cerulean blue, with a dash of Peychaud's bitters on the foam evoking a red, white, and blue effect. This Southern Border recipe gets that red accent from drops of Creole-style bitters.
The Pisco Sour itself, the drink this cocktail nods to, is generally credited to American bartender Victor Morris in Lima, Peru in the early 20th century.
50 ml pisco, 15 ml blue curaçao, 20 ml fresh lime juice, 10 ml sugar syrup, and 20 ml egg white. Drops of Creole-style bitters go on the foam and are pulled through with a cocktail stick for a marbled top.
About 15.5% ABV, a moderate strength. The lime, sugar syrup, and egg white foam soften the 50 ml of pisco.