In a blender, puree the corn kernels with 2 cups of water until smooth.

Strain the puree through a fine-mesh sieve into a large saucepan, discarding the solids.

Add the remaining 2 cups of water, milk, sugar, salt, cinnamon, and nutmeg to the saucepan.

Place the saucepan over medium heat and stir the mixture constantly until it comes to a boil.

Reduce the heat to low and simmer for 15-20 minutes, stirring occasionally, until the mixture thickens.

Remove the saucepan from the heat and stir in the vanilla extract.

Serve hot, garnished with a sprinkle of ground cinnamon on top.