Granita is such a refreshing and simple recipe, it should be part of every backyard barbecue menu. This one highlights that icon of warm weather - watermelon. In this recipe I suggest a slightly fancier version with a garnish of candied citrus peel and port wine, but it would be equally satisfying with just a few pieces of fresh watermelon and a sprig of mint.

Stir the water and sugar together in a medium saucepan. Bring to a boil over medium heat, remove from the heat and let cool to room temperature.

Combine the watermelon puree, lemon juice and sugar syrup in a medium-sized mixing bowl. Stir to mix.

Place the bowl uncovered in the freezer. Stir with a fork or whisk every 30-40 minutes until the liquid is frozen and granular. This will take 2-3 hours, depending how cold your freezer is.

Spoon the finished granita into chilled martini glasses and garnish with fresh watermelon, candied citrus peel and a drizzle of port wine. Serve immediately.