Adapted from EveryDay by Rachel Ray

This recipe makes six servings.  It is light and very refreshing!

1 cup sugar
12 sprigs rosemary
3 cups ruby-red grapefruit juice
1-1/2 cups vodka
1 teaspoon bitters (or to taste)
Ice cubes

In a small saucepan, bring 1 cup water, the sugar and 6 rosemary sprigs to a boil. Lower the heat and simmer until the liquid is clear, about 5 minutes. Let cool; discard the rosemary.

In a pitcher, combine the grapefruit juice, vodka, bitters and 3/4 cup rosemary-sugar syrup. Pour into 6 rocks glasses filled with ice cubes and garnish each with a rosemary sprig.