1.0 fl. oz. of Cointreau
0.5 fl. oz. of Lime Juice
0.5 fl. oz. of Grapefruit Juice
Ice
Suggested Garnish
Mixing Procedure
Pour the Cointreau into a shot glass, pour the remaining ingredients into a shaker, shake, strain, float the mixture on top by pouring over the back of a spoon to form distinct layers.
