To a cocktail shaker filled with ice, add the vodka, cooled espresso, coffee liqueur and simple syrup.
2 ounces vodka, 1 ounce espresso, ½ ounce coffee liqueur, ½ ounce simple syrup
Shake vigorously. (Shaking well is important to create the foam layer.)
Pour into a martini glass or coupe glass. If shaken enough, a foamy layer will form on top.
Carefully place coffee beans on top for a garnish.
3 whole coffee beans
Notes
Use fresh espresso if possible. In a pinch, you can use strong coffee instead, but espresso will have the strongest, smoothest flavor. Cold brew concentrate and strong coffee would work fine. As a last resort, you can use instant espresso or instant coffee.After brewing your espresso, let it cool off a little bit before mixing. Otherwise, you will melt the ice in the cocktail shaker, which you need to create friction while shaking and develop that key layer of foam!Shake really well for a solid minute. The act of shaking with ice cubes will create the foamy crema layer on top.Try a virgin espresso martini for all of the taste but none of the booze.