Pour the rice and water into the bowl of a blender and blend until the rice just begins to break up, about one minute. Depending on the size of your blender, you may need to process in 2 batches.
Pour the blended mixture into a container that will hold all of the blended water and rice in one, or if you processed in one batch, the blender is fine.
Let the mixture stand at room temperature for at least 3 hours.
Strain the rice water through cheesecloth into a pitcher and discard the rice.
Stir the milk, Pumpkin Spice Extract, Vanilla Extract, cinnamon and agave into the rice water.
