Put a glass into the freezer to chill for at least 30 minutes before making this drink. In a shaker, place the grapes and one of the rosemary sprigs. Muddle very well. Add the Seedlip, lemon juice, and ice cubes. Shake vigorously (30 to 40 times). Strain and pour into the well chilled
glass. Garnish with a fresh rosemary sprig.