In a medium saucepan, combine the whole milk, sweetened condensed milk, and coconut milk.

Place the saucepan over medium heat and stir gently until the mixture is warm, but not boiling.

Once warm, add the rum, vanilla extract, ground cinnamon, ground nutmeg, and a pinch of salt.

If desired, transfer the mixture to a blender and blend for smoothness.

Strain the mixture into a large bowl to remove any lumps or spice residue.

Optionally, chill the mixture in the refrigerator for at least an hour if you prefer it cold.

Pour the cremas into serving glasses and garnish with a sprinkle of cinnamon or nutmeg.

Enjoy your cremas!