18 servings (serving size: 1/2 cup)
Combine sugar and juice in a large bowl, stirring with a whisk until sugar dissolves. Add half-and-half, whole milk, and buttermilk. Pour mixture into the freezer can of an ice-cream freezer; freeze according to manufacturer's instructions. Spoon ice cream into a freezer-safe container. Cover and freeze 1 hour or until firm.