Horchata

Grind the raw, unwashed rice in a blender on high speed into a fine powder. Transfer to a medium bowl and whisk in 5 cups room temperature water. Add the canela, cover and let it sit at room temperature for 8 hours and up to 24.

Removed the canela and snap into two 1-inch pieces. Vigorously whisk the rice mixture until the rice is evenly distributed. Transfer to a blender, add the reserved canela pieces and puree on high speed for 10 minutes; the mixture will get hot and the rice will soften and start to ''cook '' and release more flavor. Add the sugar and 3/4 teaspoon salt and puree until dissolved, about 30 seconds.

Strain the rice mixture through a fine mesh sieve lined with several layers of cheesecloth into a large bowl, pressing on the solids to extract as much liquid as possible (you should have about 3 1/2 cups). Reserve the solids for another use (like cream-of-rice porridge). Stir in 3 cups very cold water. Serve over ice with a sprinkle of ground canela or cinnamon on top.