Step 1: Place all ingredients in a medium saucepan and bring to a simmer over medium heat.
Step 2: Stir the mixture with a wooden spoon to help the chocolate dissolve completely.
Step 3: Reduce heat to the lowest setting and use the molinillo to whisk the mixture vigorously in a circular motion.
Step 4: Continue simmering the hot chocolate mixture while whisking with the molinillo for about 3-5 minutes or until a frothy layer forms on top.
Step 5: Pour the hot chocolate into mugs and serve immediately. Enjoy the authentic taste of Mexican hot chocolate!