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