- ¾ ounce Yellow Doll Watermelon Syrup (made with 2 parts Yellow Doll watermelon juice and 3 parts simple syrup)
- 1¼ ounce CapRock gin
- ½ ounce St-Germain elderflower liqueur
- ¼ ounce lemon juice
- ¼ ounce lime juice
- Sparkling wine (your driest)
Place all ingredients except the sparkling wine in a shaker with ice. Shake and then double-strain into a martini glass. Top with a floater of sparkling wine.