Grapefruit-Rosemary Daiquiris

Ingredients

• 3 cups freshly squeezed ruby red grapefruit juice (about 7 grapefruit)
• 1 1/2 cups water
• 2/3 cup sugar
• 2 large sprigs fresh rosemary
• 1/3 cup vodka (optional)
• 1 1/2 teaspoons finely chopped fresh rosemary
• Sparkling white sugar (optional)
• Garnish: fresh rosemary sprigs

Preparation

1. Pour 2 1/2 cups grapefruit juice into 2 ice cube trays; freeze until firm. Cover and chill remaining juice.
2. Stir together water, sugar, and 2 rosemary sprigs in a saucepan; bring to a boil. Cover, reduce heat, and simmer 10 minutes. Remove from heat; discard rosemary sprigs. Cool syrup; chill.
3. Process frozen juice cubes, remaining 1/2 cup grapefruit juice, rosemary syrup, vodka, if desired, and chopped rosemary in a 5-cup blender for 10 seconds or until slushy. Serve in sugar-rimmed glasses, and garnish, if desired.
4. Fix it Faster: Use 3 cups bottled ruby red grapefruit juice.
5. Note: For sugared rims, dip rims of stemmed glasses into a thin coating of light corn syrup or water, and then spin rims in a plateful of sparkling white sugar.