The Boston Cooler is a light, refreshing rum cocktail combining fresh lemon juice, powdered sugar, and carbonated water for a tangy, effervescent drink. Its simple ingredient list and minimal prep make it an ideal warm-weather sipper.
Recipe Source
Visit Mr. Boston DrinksFrom Mr. Boston Drinks · by Mr. Boston Deluxe Official Bartender's Guide
Check what you already have. We'll leave it off your shopping list.
CookOS may earn a commission from Instacart orders.
Prices vary by store
*Service fees apply. Instacart® and the Instacart logo are registered trademarks of Maplebear Inc. d/b/a Instacart.
Into collins glass, put the juice of 1/2 lemon, 1 teaspoon powdered sugar, and 2 oz.
carbonated water.
Then fill glass with cracked ice and add Rum.
Fill with carbonated water or ginger ale and stir again.
Add spiral of orange or lemon peel (or both) and dangle end over rim of glass.
Mix components ahead and refrigerate separately; combine and add carbonation just before serving.
Jigger or measuring spoon · Bar spoon or long stirrer · Tall glass
Old Mr. Boston Rum is traditional, but light or white rum works well as a substitute to keep the drink crisp and refreshing.
Mix the lemon juice, powdered sugar, and rum in advance, but add carbonated water or ginger ale just before serving to maintain fizz.
Carbonated water keeps the drink light and citrus-forward; ginger ale adds spice and sweetness. Choose based on your flavor preference.
Stir the powdered sugar with lemon juice and rum first to fully dissolve before adding carbonated water.
