Rosemary Ruby Cocktail

Directions

1. 1
   In a small saucepan, bring 1 cup water, the sugar and 6 rosemary sprigs to a boil.
2. 2
   Lower the heat and simmer until the liquid is clear, about 5 minutes.
3. 3
   Let cool; discard the rosemary.
4. 4
   In a pitcher, combine the grapefruit juice, vodka, bitters and 3/4 cup rosemary-sugar syrup.
5. 5
   Pour into 6 rocks glasses filled with ice cubes and garnish each with a rosemary sprig.