Step 1

Combine the dry ingredients: In a small bowl, combine the dark chocolate, cocoa powder, cornstarch, and salt. Set aside.

Step 2

Warm the milk: Pour the milk into a medium saucepan over medium-low heat, and bring to a simmer (watch for bubbles forming around the edges).

Step 3

Add the dry ingredients to the milk: Dump the dry ingredients into the simmering milk and stir with a wooden spoon or heat-proof spatula until the chocolate is melted and smooth, 4-5 minutes.

Step 4

Let cool: Remove from heat and let cool for 5 minutes. If any skin starts to appear on the surface, whisk the mixture.

Step 5

Serve: Pour into heat-proof cups. Garnish with chocolate shavings and/or whipped cream if desired. Serve immediately.