Instructions:

1. Whip the Cream: In a mixing bowl, whip the heavy cream until soft peaks form. Reserve a few spoonfuls for garnish.​
2. Combine Ingredients: In a saucepan, combine the whipped cream, milk, and cinnamon sticks. Stir to mix.​
3. Heat the Mixture: Place the saucepan over medium heat and bring the mixture to a gentle simmer.​
4. Add Chocolate: Once simmering, add the chopped chocolate to the saucepan. Stir continuously until the chocolate is fully melted and the mixture is smooth.​
5. Sweeten: Stir in the sweetened condensed milk. Adjust the amount to achieve your desired sweetness.​
6. Remove Cinnamon Sticks: Take out the cinnamon sticks from the mixture.​
7. Serve: Pour the hot chocolate into mugs. Top with the reserved whipped cream, shaved chocolate, and a sprinkle of ground cinnamon, if desired.​

For more details and tips, you can visit the original recipe here