
Add 2 cups water and 2 cups coconut milk to a large, heavy-bottomed saucepan. Throw in ½ stick cinnamon stick, and bring to a boil.
Gradually whisk in the cornmeal until you have added the whole thing to the pot, a little bit at a time, and keep stirring with a wooden spoon to prevent lumps.
Reduce the heat to low and cook until the mixture thickens, about 15 minutes.
Add vanilla extract, nutmeg, and sweetened condensed milk.
Adjust consistency with coconut or water if desired.
Turn off the heat. Serve piping hot with extra nutmeg and optional sweeteners.