Parisian Martini Cocktail

Ingredients:
3 fluid ounces or 9 centilitres of Gin
1 fluid ounce or 3 centilitres of Dry Vermouth
1/2 a fluid ounce or 1.5 centilitres of Creme de Cassis
1 fluid ounce or 3 centilitres of Dry Vermouth
1/2 a fluid ounce or 1.5 centilitres of Creme de Cassis
Instructions:
Shake with cracked ice and strain into a chilled cocktail glass.
