1 oz. gin
½ oz. simple syrup
½ oz. fresh squeezed lemon juice
Brut Champagne or a dry sparkling white wine
Lemon twist, to garnish
Combine gin, simple syrup, and lemon juice in a cocktail shaker filled with ice. Shake until well chilled and strain into a glass. Top with Champagne and garnish with a lemon twist to serve.