In a mixing bowl, combine the cornmeal with water. Whisk thoroughly until the mixture is smooth and free of lumps. Set aside.
In a medium saucepan over medium heat, add the coconut milk, cinnamon stick (or powder), and a salt. Bring the mixture to boil.
Once the mixture starts boiling, gradually pour in the cornmeal mixture while continuously whisking to prevent lumps. Continue stirring as the porridge begins to thicken. If it becomes too thick, gradually add more water, a little at a time, while whisking to achieve the desired consistency.
Reduce the heat to low, cover the pot, and let the porridge simmer for about 10 minutes, stirring occasionally to prevent sticking.
After simmering for 10 minutes, remove the cinnamon stick. Stir in the vanilla extract, grated nutmeg, and sweeten to taste with condensed milk or sugar.
Cook for an additional 4 minutes and continue stirring to incorporate the flavors.
Once the porridge reaches your desired consistency and flavor, remove it from heat.
Serve immediately in bowls. Allow the porridge to cool slightly before eating, as it will be very hot.
Enjoy your creamy and delicious Jamaican Cornmeal Porridge.