5 cups water
½ cup milk
½ tbsp vanilla extract
½ tbsp ground cinnamon
⅔ cup sugar
Pour the rice and water into the bowl of a blender; blend until the rice just begins to break up, about 1 minute.
Let rice and water stand at room temperature for a minimum of 3 hours.
Strain the rice water into a pitcher and discard the rice.
Strain the rice water into a pitcher and discard the rice.
Stir the milk, vanilla, cinnamon, and sugar into the rice water. Chill and stir before serving over ice.