Puerto Rican Coquito

½ cup water

1 (14 ounce) can sweetened condensed milk

1 cup dark rum

2 (15 ounce) cans coconut milk

½ teaspoon ground cinnamon

1 pinch salt

Pour the water, milk, rum, and coconut milk into a blender. Add the cinnamon and salt. Blend until well combined, then refrigerate for at least one hour, or until ready to serve.