Algebra – Light Rum, Triple Sec & Lemon Sour Cocktail

The Algebra cocktail is a minimalist rum sour that proves balance doesn’t need complexity. Built with light rum, triple sec, and fresh lemon juice, it delivers a bright, citrus-forward profile with just enough sweetness to keep things smooth. It’s quick to make, easy to understand, and consistently refreshing.

Background

The Algebra follows the classic sour template of spirit, citrus, and sweetener, a structure that dates back to the 19th century. By using triple sec as both sweetener and flavor component, it simplifies the formula while keeping the balance intact. It’s a modern, stripped-down take on drinks like the Daiquiri.

What You’ll Need

Ingredients

• Light Rum – the clean, slightly sweet base that carries the drink
• Triple Sec – provides both sweetness and bright orange character
• Lemon Juice – adds acidity and structure to balance the drink

Substitutions

• Use Cointreau for a cleaner, more refined orange profile or Grand Marnier for added richness
• Swap lemon for lime juice for a more classic Daiquiri-style variation

Equipment

• Cocktail shaker
• Jigger
• Strainer
• Cocktail glass

Why This Drink Works

One Liqueur, Two Roles

Triple sec handles both sweetness and flavor, simplifying the build without sacrificing balance.

Crisp and Direct

The drink hits clean citrus notes up front, followed by a smooth rum finish.

Built on Classic Ratios

The 2:0.75:0.75 structure ensures reliable balance every time.

Substitutions & Variations

• Daiquiri variation – use lime juice instead of lemon
• Sweeter profile – add a small amount of simple syrup if needed
• Orange-forward twist – increase triple sec slightly for more citrus depth
• Split base – combine light rum with a touch of aged rum for added complexity

Helpful Tips

• Always use fresh citrus juice for proper balance
• Shake hard to fully integrate and chill the drink
• Chill your glass beforehand for a cleaner presentation
• Adjust sweetness slightly depending on your triple sec brand