Preheat your oven to 325 degrees
Bring a saucepan or tea kettle of water to a boil while you prepare the horchata cream mixture
Combine 1/2 cup of granulated sugar, 1/2 teaspoon of ground cinnamon, 1 cup of heavy cream and 1 cup of horchata in a small saucepan
Place the saucepan over medium heat and cook, stirring consistently, until the mixture begins to simmer and then remove the saucepan from the heat
While the cream mixture is cooling, whisk 5 egg yolks with a pinch of salt in a large bowl
Very slowly add the slightly cooled cream mixture into the egg yolks, whisking the entire time
Add 1 teaspoon of vanilla extract and transfer the horchata cream mixture into a container with a pouring spout
Place four 6-8 ounce ramekins into a large baking dish with a thin towel lining the bottom
Carefully divide the horchata cream mixture evenly between the 4 ramekins
Add enough boiling water to the baking dish to come half way up the sides of the ramekins, being careful not to splash any water into the ramekins
Carefully transfer the baking dish onto the center rack of a 325 degree oven and bake for 35-45 minutes (depending on how deep your ramekins are)
Once the outer edges of the surface is lightly set, but the inner surface lightly jiggles remove the baking dish from the oven and transfer the ramekins to a cooling rack
Allow the crème brûlée cool for 1 hour at room temperature and then transfer into the refrigerator to chill uncovered for 2 hours
After 2 hours of chilling uncovered, the crème brûlée can be served or covered and chilled for several days
Once ready to serve, sprinkle the tops of each crème brûlée with 1-2 teaspoons of granulated sugar (depending on how wide your ramekins are) and brûlée with a chefs torch
Garnish with whipped cream and a sprinkle of ground cinnamon