- 3 ounces gin
- 1 tablespoon superfine sugar
- 2 tablespoons lemon juice
- 1 tablespoon lime juice
- 1 egg white
- 3 or 4 ice cubes
- Sprig of mint
- Club soda
- Combine all ingredients, except the mint sprig and soda, in a cocktail shaker and shake vigorously. Strain into a highball glass, fill with soda, and garnish with mint sprig.