Boston Cooler

Pro tips

• Use a tall glass and pack it tightly with ice to maximize chilling and slow dilution.
• Add the powdered sugar first and stir gently before adding carbonated water to ensure even sweetness distribution.
• Pour carbonated water slowly at the end to preserve fizz and prevent over-dilution.
• Serve immediately after mixing—the drink's appeal depends on carbonation and temperature.

Substitutions

• Club soda → ginger ale (adds spice; reduces need for additional sweetness)
• Powdered sugar → 1/2 tsp simple syrup (smoother dissolve; slightly less texture)

Storage & make-ahead

Mix and serve fresh. Do not prepare ahead—carbonation and chill are essential to the drink's character.

Equipment

Jigger · Tall glass · Bar spoon or stirring rod

Can I use a different rum in a Boston Cooler?

Yes, though J. Wray and Nephew's aged character defines the classic drink. Any quality aged rum works, but darker or spiced rums will alter the flavor profile.

What type of carbonated water should I use?

Plain carbonated water or club soda works best. Avoid flavored sparkling water, which can clash with the rum and powdered sugar balance.

Is powdered sugar necessary, or can I use simple syrup?

Powdered sugar is traditional and creates a slightly grainy texture characteristic of the drink. Simple syrup will work but produces a different mouthfeel.

How full should I fill the glass with ice and water?

Each ingredient fills the glass completely—fill halfway with ice, then top with carbonated water to the brim for proper dilution and chilling.