Sometimes it's hard to decide between a cocktail or dessert. With an espresso martini, you can have both. But beware, the combo of caffeine and alcohol is a strong one so just stick to a single serving.
Technique tip: Shake vigorously to chill the cocktail.
Swap option: Use simple syrup instead of sweetened condensed milk.
In an ice-filled cocktail shaker, vigorously shake the espresso, vodka, coffee liqueur and sweetened condensed milk until frothy, about 15 to 20 seconds.2.
Strain the cocktail into a martini glass and serve immediately.