1 1/2 oz white rum, SelvaRey is very good
3/4 oz Kahlua
1+ oz espresso or unsweetened cold brew concentrate
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1/4 oz vanilla liqueur
1/4 oz Bailey's (optional)
coffee beans for garnish
Combine all ingredients in a shaker with ice. Shake vigorously for 30 seconds. Serve in a martini glass and garnish with a coffee bean, finely grated with a micro plane.