Gather 2 cups milk, 2 tablespoons cocoa powder, 2 to 3 tablespoons sugar, 2 cups vanilla ice cream, and ice cubes if desired
Add the milk to a blender
Add the cocoa powder and sugar
Add the vanilla ice cream
Add ice cubes if you want a thicker, colder shake
Blend until smooth and creamy
Taste and adjust sweetness if needed
Pour into a glass
Serve immediately