Place the ice, Cointreau, rum, and pomegranate syrup into a blender, blend until smooth. Moisten the rim of a tumbler with the cut edge of the orange slice, and dip the glass into the sugar to line the rim. Pour the granita into the glass, and garnish with the orange slice to serve.
Tips & Tricks
How to Make Blueberry Mojitos
Put a blueberry twist on the minty, classic Cuban cocktail.
Blue Hawaiian Cocktail
See how to make a classic tiki cocktail with rum and blue curacao.