Root Beer Float
A root beer float poured in the right order so the foam rises and stops at the rim. Chilling, ice cream choice and how to avoid a sticky overflow.
Allow 10 minutes to frost the glass in the freezer; it slows melting and calms the foam.
Before you start
A root beer float is two ingredients, but the order you combine them decides whether you get a neat foamy cap or a sticky puddle on the table. Dropping ice cream into a full glass of soda releases carbon dioxide in a rush, because the fat, proteins and rough surface of the ice cream give bubbles countless places to form. The foam climbs faster than you can drink it.
Pouring some soda first, adding the ice cream, then topping up slowly lets you control the foam. Very cold root beer holds its carbonation better and foams less, and a glass straight from the freezer keeps the ice cream firm. Use real vanilla ice cream with some fat; the creamy layer that forms where it meets the soda is the best part.
Ingredients
- 2 scoops (about 140 g / 1 cup) vanilla ice cream
- 240-300 ml (8-10 oz) root beer — well chilled
- To top whipped cream and a cherry — optional
Method
- Place the glass or mug in the freezer for at least 10 minutes. Keep the root beer in the coldest part of the fridge until the moment you pour.
- Tilt the glass and pour about 120 ml of root beer slowly down the side, as you would pour a beer, so it keeps its fizz.
- Gently lower the first scoop of ice cream into the soda, then add the second scoop on top. Foam will rise; pause and let it settle for 20 to 30 seconds.
- Pour the rest of the root beer in a thin stream down the side of the glass, stopping when the foam reaches the rim. Wait for it to fall, then add a little more.
- Top with whipped cream and a cherry if you like, and serve with both a straw and a long spoon.
Tips for success
- Warm soda foams much more than cold. If your root beer is at room temperature, do not add ice; chill it for a few hours instead.
- Hard, well-frozen ice cream releases fewer bubbles than soft scoops, so scoop it straight from the freezer.
- Set the glass on a small plate. Even a careful pour can spill a little foam.
Substitutions
- Root beer
- Cola, cream soda, orange soda or ginger beer all make floats. Each foams to a different degree, so pour slowly the first time.
- Vanilla ice cream
- Chocolate or coffee ice cream make richer floats. Dairy-free vanilla works but forms a thinner creamy layer.
- Bottled root beer
- Diet root beer works, but it tends to foam more aggressively; pour even more slowly.
Variations
- Brown cow
- Use chocolate ice cream with root beer, or vanilla ice cream with cola, depending on local custom.
- Root beer freeze
- Blend the root beer and ice cream together for 10 seconds for a frothy, drinkable version.
Troubleshooting
- Foam overflows the glass
- The ice cream went in last or the soda was warm. Pour soda first, add ice cream, then top up slowly with very cold soda.
- Float goes flat quickly
- The soda was poured straight down or stirred hard. Tilt the glass while pouring and avoid stirring.
- Ice cream melts too fast
- The glass and soda were not cold enough. Frost the glass and keep the soda as cold as possible.
Storage
Serve and enjoy immediately; a float cannot be made ahead because the soda loses its fizz and the ice cream melts.
About this page
Written and reviewed by the MyDrinkAI editorial team. Last reviewed . Amounts and timings are a careful starting point, not a lab-tested formula; ingredients, equipment and kitchens vary. This recipe has no ratings or nutrition estimate.