Mix all the ingredients together in a freezer-safe container.
Place the airtight container in the freezer for 3-4 hours.
Remove after and with a fork scrape the set iced mixture into a granita-like slush.
Replace back in the freezer for another 2-3 hours.
When you serve, scrape the granita with a fork to create the granita-like texture.
For a fancy look, serve the granita in scooped out lemon halves.