• 2 oz dry vermouth
    1/2 oz gin
    2 tsp creme de cassis
    1 oz lemon juice
    4 oz tonic water

Pour the vermouth, gin, creme de cassis and lemon juice into a cocktail shaker half-filled with ice cubes, and shake well. Strain into a collins glass almost filled with ice cubes, and top with tonic water. Stir well, garnish with a lemon wedge, and serve.