- 1.5 oz. Firefly Ruby Red Grapefruit
- .25 oz. Rosemary syrup (heat up equal parts sugar and water to a simmer. Steep in some rosemary and let sit for 30 mins)
- 1.5 oz. Ginger beer
- 1.5 oz. Soda water
Serve over rocks. Garnish with a fresh wedge of grapefruit and a rosemary stem.