Step 1

In a small pot, combine 2 tablespoons of the milk, sugar, and cocoa powder. Heat over medium heat, whisking constantly, until mixture begins to simmer and is well-combined and smooth.

Step 2

Remove from heat and whisk in cold coffee, remaining 2 tablespoons of the milk, and optional heavy cream.

Step 3

Pour over a 16-ounce cup (or mason jar) of ice, top with whipped cream and chocolate syrup if desired, and enjoy.