The Boston Cooler is a light, citrus-forward rum cocktail made with Old Mr. Boston rum, fresh lemon juice, powdered sugar, and carbonated water. It's a refreshing, easy-to-batch drink ideal for warm weather.
Recipe Source
Visit Mr. Boston DrinksFrom Mr. Boston Drinks · by Old Mr. Boston De Luxe Official Bartender's Guide
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Into 12 oz.
Tom Collins glass, put: juice of a lemon, powdered sugar and carbonated water then stir.
Fill glass with cracked ice and add Old Mr.
Boston Imported Rum.
Fill with carbonated water or ginger ale and stir again.
Insert spiral of orange or lemon peel (or both) and dangle end over rim of glass.
Cocktails are best served fresh. Pre-batch the rum, lemon juice, and powdered sugar; add carbonated water and ice only when serving.
Old Mr. Boston Imported Rum is traditional, but any light or aged rum will work. Light rum keeps the drink refreshing; aged rum adds complexity.
Yes. Use simple syrup (equal parts sugar and water) or regular sugar dissolved in a small amount of warm water as a 1:1 substitute by volume.
Fresh lemon juice is strongly preferred for better flavor and acidity balance. Bottled lemon juice will make the drink taste flat and chemical.
Mix the rum, lemon juice, and powdered sugar up to 2 hours ahead. Add carbonated water and ice just before serving to keep it fizzy.
The Boston Cooler relies on the rum as its base spirit and keeps sugar minimal, making it a cocktail rather than a sweetened beverage.
