Combine the milk and sugar in a medium saucepan. Warm it over medium heat, stirring occasionally, until the sugar dissolves and the milk starts to steam.

In a small bowl, stir the cocoa powder and cornstarch with a few tablespoons of warm milk. Mix until you get a lump-free, silky paste. This step prevents clumps from ruining your hot chocolate.

Pour the cocoa paste back into the saucepan. Keep whisking to blend everything evenly—it should already start looking beautifully chocolatey!

Add the chopped chocolate chips and stir until melted

Let the mixture simmer for a minute to thicken. Keep stirring to keep it smooth.

Stir in a pinch of salt to enhance the deep chocolate flavor. It's a small touch that makes a big difference!

Serve and garnish: Pour the thick Italian hot chocolate into mugs. For a fun, indulgent finish, add a dollop of whipped cream, a sprinkle of chocolate shavings, or some mini marshmallows.