To submit requests for assistance, or provide feedback regarding accessibility, please contact


Rum and Root Beer Float Cocktail Recipe

Written by MasterClass

Last updated: Nov 8, 2020 • 1 min read

No need to leave the mighty root beer float in the annals of childhood: one small adaptation and it’s transformed it into a thoroughly adult indulgence.



Lynnette Marrero & Ryan Chetiyawardana Teach MixologyLynnette Marrero & Ryan Chetiyawardana Teach Mixology

World-class bartenders Lynnette and Ryan (aka Mr Lyan) teach you how to make perfect cocktails at home for any mood or occasion.

Learn More

Learn About Root Beer Cocktails

There’s plenty of alcoholic root beer out there—think root beer schnapps in a Pirate’s Float, or “root beer” beers infused with vanilla, sassafras, and sugar—but a root beer cocktail like the rum float, which builds on the spicy, savory, sweet flavors of the classic caramel-hued soda with a moody complementary spirit like rum is far more interesting.

A float isn’t a float without a cold, creamy component nudging it into milkshake territory: Go classic with vanilla ice cream, on-theme with a rum ice cream, or swap it out for a few ounces of either Rumchata, a spiced rum and heavy cream liqueur, the coffee liqueur Kahlua, or Bailey’s Irish Cream over ice.

Rum and Root Beer Float Recipe

1 cocktail
Prep Time
2 min
Total Time
2 min


  • 2 oz. dark rum, like Kraken or Captain Morgan's spiced rum
  • 4 oz. root beer
  • 1 scoop vanilla ice cream
  1. Add crushed ice or ice cubes to a tall glass. Add rum and top with the root beer, leaving an inch or two of space from the rim of the glass. Stir to combine.
  2. Float the ice cream on top. Serve with a straw and spoon.

Learn more about mixology from award-winning bartenders. Refine your palate, explore the world of spirits, and shake up the perfect cocktail for your next gathering with the MasterClass Annual Membership.