If you don't have a cocktail shaker, improvise with a jar with a screw top lid. You can also make this in a blender and you'll end up with a frothy cocktail-like drink that will feel like you're drinking a caffeinated cloud.
Don't have simple syrup on hand? It's easy to make and handy to have if you like making cocktails at home. Just boil one part sugar with one part water in a small saucepan until the sugar dissolves. Store in a jar in the refrigerator and you can make yourself caffè shakerato all week long.
Some variations to consider: Spice things up by spiking the coffee with a dash of something alcoholic. Try rum, sambuca, or amaretto. Or, how about adding some vanilla extract or a twist of lemon zest for something different? Just as long as you add it to the shaker before the hot coffee, which must always come last, you can experiment with additional flavors. And, if you really want something indulgent, you could always top your caffè shakerato with freshly whipped cream and cocoa powder. —Emiko
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