Step 1

Add 3 cups of water, the rice, almonds, and cinnamon stick to a blender. Blend for 1-3 minutes until the mixture is as smooth as possible.

Step 2

Transfer the mixture to a large bowl or pitcher, add the remaining 3 cups of water, cover, and let the mixture sit and soak in the refrigerator for 8-12 hours or overnight.

Step 3

Pour the mixture through a fine mesh strainer or sieve 2-4 times and into another pitcher or container, until the mixture is no longer gritty and is as smooth as you can get it.

Step 4

Add the milk, sugar, and vanilla extract and stir until fully combined. Taste and sweeten with more sugar if you prefer.

Step 5

Serve the horchata over ice with a sprinkle of ground cinnamon and enjoy!