Espresso Martini

• 1.5 oz Vodka (mid-tier) • 1 oz fresh espresso • 0.5 oz coffee liqueur (e.g. Kahlúa or Mr Black) • 0.25 oz 2:1 simple syrup (optional, for balance) • Shake hard with ice and fine strain into a chilled coupe • Garnish: 3 coffee beans