Instructions

1. Combine sugar, water, and basil in a small saucepan over medium heat, stirring until sugar dissolves. Bring to a boil, reduce heat, and simmer 5 minutes. Remove from heat; cool to room temperature, about 30 minutes. Strain.
2. Blend peaches and lemon juice in a blender until smooth.
3. Fill a large cocktail shaker with ice. Add half of peach mixture and half of cooled prepared syrup. Shake vigorously until very cold, about 30 seconds. Divide between 2 Old-Fashioned glasses, and top with sparkling water.
4. Repeat process with remaining peach mixture and prepared syrup. Garnish, if desired. Makes 4 servings.