1. Brew the espresso
2. In a saucepan, mix cocoa, cinnamon, chili powder, and brown sugar with a splash of milk to form a paste.
3. Add the remaining milk and vanilla, heating over medium until hot, stirring to combine.
4. Froth the milk lightly.
5. Pour the espresso into a mug, add the spiced milk mixture, and top with a dollop of whipped cream and a dusting of cocoa powder.