Add uncooked rice, 2 cups water, and cinnamon sticks to your blender and blend until roughly ground.
Strain the mixture through a mesh strainer (or cheesecloth) and discard chunks.
Add milk, vanilla, cinnamon, and sugar into the rice water and chill before serving over ice.
This horchata recipe is a refreshing, cinnamon-flavored Mexican drink filled with flavor! It's festive and perfect for any occasion.