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A cut crystal rocks glass filled with dark root beer rum cocktail over ice, topped with a billowing layer of whipped cream drizzled with caramel sauce and garnished with fresh mint, served on a wooden board with lime and chocolate pieces alongside.

Root Beer Rum Cocktail

A luxurious, nostalgic dessert cocktail featuring straight-sided faceted glasses ribboned with rich caramel sauce, loaded with warm spiced rum and premium root beer, and finished with a velvety cloud of lightly whipped heavy cream.
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Prep Time 5 minutes
Total Time 5 minutes
Servings: 2
Course: Drinks
Cuisine: American
Calories: 280
Ingredients Equipment Method Notes

Ingredients
  

  • 4 oz spiced rum Premium dark aromatic spirit establishes our warm foundational baseline profile
  • 12 oz premium root beer Chilled glass bottle variety made with real cane sugar for robust carbonation
  • ΒΌ cup heavy whipping cream Kept ice-cold before whisking into a light pourable cloud float layer
  • 2 tablespoon dark caramel sauce Drizzled along the inner glass walls to create a striking marbled visual look
  • 2 sprigs fresh mint Tucked cleanly into the cream tops along with a dust of cocoa powder for garnish
  • 2 cups crushed ice Packed tightly to chill the liquid bases and support the top cream float

Equipment

  • 2 faceted highball glasses Clear textured glasses showcase the marbled caramel ribbons and white foam float beautifully
  • 1 wire hand whisk Essential for beating the cold heavy cream into a light, pourable froth within thirty seconds
  • 1 long mixing spoon Used to chill the spirit base uniformly and guide the floating cream layer cleanly

Method
 

  1. Drizzle your thick dark caramel sauce generously along the upper inner walls of two clean faceted highball glasses smoothly.
  2. Place the decorated glassware inside the freezer compartment for ten minutes to lock the sweet amber ribbons firmly in place.
  3. Pour your ice-cold heavy whipping cream and a small touch of vanilla extract into a medium mixing container cleanly.
  4. Whisk the liquid dairy vigorously for thirty seconds using a wire hand whisk until a light, pourable froth developments completely.
  5. Retrieve your frosted highball jars from the freezer and pack each glass halfway up with clean crushed ice particles.
  6. Measure and pour two ounces of premium spiced rum directly over the cold ice layers inside each prepared glass structure.
  7. Stir the alcohol baseline for five seconds with a long spoon to drop the spirit temperature metrics uniformly safely.
  8. Tilt the glass and pour your ice-cold root beer soda slowly down the inner wall to preserve the dancing bubble matrix.
  9. Leave a clean half-inch boundary gap completely free of liquid at the top rim of the carbonated glass container.
  10. Position the back of your mixing spoon flat against the glass wall right at the fluid line to prepare for the dairy float layer.
  11. Spoon the lightly whipped heavy cream slowly over the spoon back to form a crisp, uniform white cloud crown across the top surface.
  12. Garnish the foam surface with a pinch of cocoa powder, a fresh mint sprig, and a long silver spoon to serve immediately frosty cold.

Notes

Pouring the lightly whipped heavy cream slowly over the back of a spoon against the inner glass wall prevents it from crashing into the soda, ensuring a flawless, professional floating crown layer.