Ingredients:
2 cups warm espresso
1/2 cup sugar
2 tablespoons Cognac
1 teaspoon lemon zest, finely chopped

Garnish:
Fresh mint leaves
Chocolate, shaved

Combine all ingredients and mix until the sugar dissolves.  Pour into a shallow container and carefully place into the freezer.  Every 10 minutes, using a fork, scrape the top of the granita into shavings.  Repeat until no liquid remains.  Transfer into individual chilled dishes and serve immediately.  Or store in the freezer inside a plastic container with the lid closed tightly for up to 3 days.