So simple! All you need to make perfectly delicious horchata is to mix long grain rice with whole almonds, one cinnamon stick, sugar, and fresh, cold water. Blend everything until thoroughly mixed and add more water. Let this mixture sit overnight, or at least for 4 hours before you strain with cheesecloth or a nut milk bag. Sweet but not too sweet, you'll love this extraordinarily refreshing Mexican rice drink! Get the recipe for Chef John's Horchata.