Only 3 ingredients needed for this company-friendly after-dinner treat. Fresh lemon zest and juice offer a tart flavor that pairs well with the sugar and fresh mint. This summery make-ahead dessert offers a healthy dose of antioxidants from the lemons and basil. Notes: Lemon basil makes a nice alternative to regular basil in this granita. You can make the granita (through step 3) up to 1 week ahead; freeze airtight.