Add bourbon, dark rum, and heavy cream into a cocktail shaker.
Fill the shaker halfway with ice cubes.
Shake vigorously for 10–12 seconds until well chilled and the cream is fully integrated.
Double-strain into a chilled cocktail glass.
Serve immediately.
Shaking cream cocktails vigorously is essential - it aerates and emulsifies the heavy cream with the spirits, creating a silkier texture than stirring ever could. Double-straining removes any ice shards that would dilute the luxurious mouthfeel.
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