In a cocktail shaker, add the Ice Cubes, Syrup, and Espresso. Put the lid on and shake vigorously for 10 to 15 seconds. The shaker should become ice cold and the mixture should become a light caramel-colored froth. Strain the liquid into a chilled glass, ensuring no ice cubes end up in the drink. If desired, garnish with a coffee bean, coco powder, or whipped cream.