Place 1 cup of the milk to a medium saucepan.

Cook over a medium flame until the milk just begins to simmer.

Add cocoa powder, sugar, cinnamon and cayenne powder to the milk.

Whisk until cocoa, sugar, spices and milk are thoroughly combined.

Slowly add remaining 3 cups of milk, whisking to combine.

Cook over a low flame until the hot chocolate is warmed through.

Serve immediately.

Optional: Top with whip cream, cinnamon sugar, and use a cinnamon stick as a stir stick.