An Espresso Martini is a sophisticated cocktail made with vodka, freshly brewed espresso, and coffee liqueur (like Kahlúa). The ingredients are shaken with ice and strained into a chilled martini glass. The drink has a rich, bold coffee flavor with a smooth, slightly sweet finish. It's typically garnished with a few coffee beans on top for a stylish touch. The Espresso Martini combines the energizing qualities of coffee with the smoothness of alcohol, making it a popular choice for after-dinner drinks.