Bahamas Highball Cocktail

Ingredients:
2 fluid ounces or 6 centilitres of Gin
1 fluid ounce or 3 centilitres of French Vermouth
Tonic Water
1 fluid ounce or 3 centilitres of French Vermouth
Tonic Water
Instructions:
Stir in a highball glass and fill with tonic water. Garnish with a slice of lemon.
