If you don’t have an espresso maker, use triple the amount of coffee you normally use to brew coffee.
1 cup espresso, cold
1/2 cup coffee ice cream
1/4 cup crushed ice
1/3 cup milk
1/4 cup heavy cream, whipped
1/4 teaspoon ground cinnamon, or as needed
Blend the espresso, ice cream, ice, and milk in a blender until smooth. Serve at once in chilled tall glasses garnished with a dollop of whipped cream and chocolate shavings.