Pink Frost

1/2 oz Soda Water
2 oz Grapefryit Juice
1/2 oz Simple Syrup
1 oz Elderflower Liqueur
Fill a shaker with ice , add grapefruit juice, elderflower liqueur, and simple syrup. Shake
Strain cocktail into a chilled glass filled with ice
top off with soda water
Stir.
Margarita glass.