Preparation
Grind the rice in your blender until it is ground smooth. Toss with cinnamon stick and lime zest. Let rest overnight. After resting, place rice mixture into blender with blueberries and blend until smooth. Add in 2 cups of water to mixture and soak for 2 hours. Strain the liquid through a fine sieve or cheesecloth a few times to remove any residues. Add in the rest 3 cups of the water and stir in sugar until dissolved. Garnish with a mint sprig.

Yield
2 to 4 servings