Palm Beach Cocktail

Ingredients:
1 & 1/2 fluid ounces or 4.45 centilitres of Gin
1 & 1/2 Teaspoons of Sweet Vermouth
1 & 1/2 Teaspoons of Grapefruit Juice
1 & 1/2 Teaspoons of Sweet Vermouth
1 & 1/2 Teaspoons of Grapefruit Juice
Instructions:
Shake with ice and strain into a cocktail glass.
