Palm Beach Martini Cocktail

Ingredients:
3 fluid ounces or 9 centilitres of Gin
1 Teaspoon of Sweet Vermouth
2 fluid ounces or 6 centilitres of Grapefruit Juice
1 Teaspoon of Sweet Vermouth
2 fluid ounces or 6 centilitres of Grapefruit Juice
Instructions:
Shake with cracked ice and strain into a chilled cocktail glass.
