Cacao con leche (cacao con leche)

Instructions

1. In a saucepan, mix the cocoa and sugar with a little cold water to make a smooth paste.
2. Add the rest of the water and the cinnamon stick, then bring to a boil while stirring.
3. Pour in the milk and heat over medium heat without boiling.
4. Remove the cinnamon and whisk the mixture until frothy.
5. Add the pinch of salt and the chopped dark chocolate if you're using it.
6. Serve right away, piping hot.