Borinquen Rum Cocktail
The Borinquen Rum Cocktail is a tropical spirit-forward drink built on passion fruit syrup, fresh lime and orange juice, and aged rum with a 151-proof float for depth. It's a balanced, citrus-forward Caribbean cocktail that's both smooth and warming.
Total
5 minServings
4Recipe Source
Visit Mr. Boston DrinksFrom Mr. Boston Drinks · by Mr. Boston Deluxe Official Bartender's Guide
Ingredients
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6 Ingredients
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Instructions
- 1
Put half a cup of crushed ice into blender.
- 2
Add all ingredients and blend at low speed.
- 3
pour into old-fashioned glass.
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Tips & Notes
Pro tips
- Crush ice finely just before serving to maximize chill and slow dilution without over-watering the drink.
- Use fresh lime and orange juice—bottled versions lack the brightness that balances passion fruit syrup's richness.
- Float the 151-proof rum last over the back of a bar spoon to create a visible layer and preserve its high-proof character.
- Chill your glass with ice or refrigeration before pouring to extend the drink's freshness.
Substitutions
- Old Mr. Boston Rum → Bacardi or Mount Gay (neutral aged rum, similar proof)
- Passion Fruit Syrup → grenadine or homemade passion fruit reduction (slightly different flavor, same sweetness role)
- Crushed ice → cubed ice (melts faster, less texture contrast)
Storage & make-ahead
This cocktail is best served immediately. If batching the base (rum, syrups, juice), refrigerate up to 4 hours; add ice and float the 151-proof rum at service.
Equipment
bar spoon (for floating technique) · cocktail shaker or mixing glass · jigger (for precise 1.5 oz and 1 tsp measures) · ice crusher or Lewis bag
Common Questions
Can I make this without 151-proof rum?
Yes. Use regular aged rum (80-proof) in place of the 151-proof float, though you'll lose the intensity. Alternatively, skip the float entirely for a softer finish.
What type of passion fruit syrup should I use?
Store-bought passion fruit syrup or grenadine-style syrups work best. You can also make your own by simmering fresh passion fruit pulp with sugar and water, then cooling.
How do I properly layer the 151-proof rum float?
Pour the 151-proof rum slowly over the back of a bar spoon held just above the surface of the drink to float it on top without mixing.
Can I batch this cocktail in advance?
Mix the rum, passion fruit syrup, and juices in a pitcher up to 4 hours ahead. Add crushed ice and float the 151-proof rum just before serving.
What size glass should I use?
A 6–8 oz coupe or rocks glass works well. Serve over crushed ice to keep it cold and dilute slowly as it melts.
