Jamaica Rum Sour

Pro tips

• Squeeze lemon and lime fresh just before mixing — bottled juice will flatten the bright citrus notes that define this drink.
• Chill your glass with ice before pouring to keep the cocktail cold longer and prevent dilution.
• Add carbonated water last and stir gently to preserve the fizz and avoid over-mixing.
• Use a jigger to measure rum accurately — too much will overpower the balance, too little will weaken the drink.

Substitutions

• Gum syrup → simple syrup (lighter mouthfeel, but acceptable)
• Jamaica rum → other dark rum (Jamaican rum has distinct funk and character, but quality dark rum works)
• Carbonated water → club soda or sparkling water (minimal flavor difference)

Storage & make-ahead

This cocktail is best served fresh immediately after mixing. Pre-batch the rum, juice, and syrup up to 24 hours ahead, then add carbonated water and ice when serving.

Equipment

cocktail jigger · citrus juicer or reamer · bar spoon

What is gum syrup and can I substitute it?

Gum syrup is a bartender's staple made from sugar, water, and gum arabic, creating a smooth texture. You can substitute with simple syrup, but the mouthfeel will be slightly thinner.

Should I use dark or light Jamaica rum?

Dark or amber Jamaica rum works best for this drink, as it adds depth and complexity. Light rum will result in a less flavorful cocktail.

Can I make this ahead of time?

Mix the rum, juices, and gum syrup ahead, but add carbonated water and ice just before serving to maintain carbonation and chill.

How much does this recipe yield?

This recipe makes one cocktail. Double or triple the proportions for multiple servings.

What type of glass should I use?

Serve in a highball or rocks glass filled with ice for the best presentation and temperature retention.