This is a bubbly variation on the Southside, a Prohibition-era drink with a mysterious history. Some say it originated in a New York speakeasy, The 21 Club. Others believe it emerged on the South Side of Chicago, where notorious gangs would compete with their North Side rivals selling cocktails made from illegal gin.
This citrusy drink is traditionally served in a coupe glass.
1. Lightly muddle 6 mint leaves in a shaker.
2. Add 2 fl oz (60ml) gin, 1 fl oz (30ml) lemon juice, and 1/2 fl oz (15ml) sugar syrup.
3. Fill shaker with ice and shake for 10 seconds.
4. Strain into a coupe glass.
5. Top with Champagne.
Garnish: Float a mint leaf in your cocktail for an elegant finish.
This drink works well replacing the gin with Seedlip and topping with ginger ale rather than Champagne.