|Unsweetened grapefruit juice||1⁄2 (Use Fresh)|
|French dry vermouth||30 Milliliter|
1. In a cocktail shaker, add ice cubes, cointreau, fresh grapefruit juice, dry French vermouth, brandy and gin.
2. Shake well the contents of the shaker until a frost forms.
3. Into a sour glass, strain the contents of the shaker and serve chilled.