Begin by combining the instant coffee, cocoa powder, granulated sugar, and boiling hot water in a mixing bowl. Stir gently to ensure all dry ingredients are moistened.
Whisk the mixture vigorously using either a hand whisk or an electric mixer. Continue whisking until the mixture becomes thick, creamy, and frothy, reminiscent of whipped cream – this should take about 2-4 minutes.
Take a tall glass and add ice cubes to your liking if you prefer a chilled beverage. Next, pour in the milk, filling the glass about three-quarters full.
Carefully spoon the frothy chocolate espresso mixture over the top of the milk, allowing it to float and create an attractive layered effect.
If you like, use a spoon to gently swirl the mixture into the milk for a beautiful marbled appearance. Alternatively, you can leave it layered for a striking visual presentation.
For a luxurious finish, top with a generous dollop of whipped cream. Sprinkle a handful of chocolate shavings or cocoa nibs on top for an elegant garnish.
Serve immediately with a straw or a spoon, inviting your guests to mix the layers as they enjoy.
Notes
For a chilled drink, add ice cubes. Top with whipped cream for extra indulgence.