Gin And Bitter Lemon

• 1 1/2 oz Gin
• 1/2 oz Lemon juice
• 1/2 tsp superfine Sugar
• 4 oz Tonic water

In a shaker half-filled with ice cubes, combine the gin, lemon juice, and sugar. Shake well. Strain into a highball glass almost filled with ice cubes. Top with the tonic water.