1 1/2 oz Vodka
1 oz Grapefruit Juice
1 oz Elderflower Liqueur
1/2 oz Simple Syrup
2-3 Strawberries, Cut Up
Soda.
Boxcutters, Jigger, Muddler, Shaker Classic/Boston, Citrus Juicer, Strainer, Collins Glass.
Put all Ingredients except the Soda into a Cocktail Shake...