In a medium saucepan, combine 1½ cups of whole milk and ½ cup of heavy cream. Place over medium heat, whisking occasionally until small bubbles form around edges.

In a small bowl, mix 2 tablespoons of dark brown sugar, 2 teaspoons of cornstarch, and ½ teaspoon of flaky sea salt. Once the dairy is warm, gradually whisk in the dry mixture.

Remove from heat and stir in 8 ounces of chopped dark chocolate. Whisk until fully melted and incorporated, about 2-3 minutes.

Pour into mugs and top with homemade whipped cream and chocolate shavings. Serve immediately.