Rhubarb Ice Cream Float topped with vanilla ice cream, pistachios and fresh rhubarb ribbons.

A Rhubarb Float is a refreshing summer dessert made with homemade rhubarb syrup, sparkling water, and creamy vanilla ice cream. Sweet, tangy, and delightfully frothy, this easy float comes together in just minutes and is a wonderful way to enjoy fresh rhubarb during the warmer months.

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There’s something undeniably nostalgic about an old-fashioned ice cream float. They’re simple, fun, and always feel like a special treat, whether you enjoyed them at a classic soda fountain or made them at home during the summer. This rhubarb version is a little different. Instead of sweet soda, it starts with homemade rhubarb syrup, creating a float that’s bright, fruity, slightly tart, and incredibly refreshing. So, let’s dive into this rhubarb syrup ice cream float.

Why You’ll Love This Rhubarb Float

With just a handful of ingredients, this creamy rhubarb float comes together in minutes and makes the perfect warm-weather dessert or afternoon treat.

Easy. Ready in about five minutes with almost no preparation.
Refreshing. Tangy rhubarb syrup balances the rich vanilla ice cream beautifully.
A great way to use rhubarb syrup. Perfect if you’ve already made a batch of homemade rhubarb syrup.
Customizable. Try different ice creams, fruits, syrups, or even a boozy variation.
Beautiful to serve. The creamy foam and pink colour make this float especially eye-catching.
Perfect for summer. A refreshing dessert drink for barbecues, garden parties, or relaxing on the patio.

What Is an Ice Cream Float?

Ice cream floats are classic dessert drinks made by combining ice cream with a carbonated beverage. As the ice cream slowly melts, it creates a creamy, frothy layer that blends with the fizzy drink underneath, producing a refreshing combination of rich, sweet, and bubbly textures.

The concept dates back to the late nineteenth century and quickly became a favourite at North American soda fountains. While the famous Root Beer Float remains the best-known version, countless variations have appeared over the years, including Coke Floats, Purple Cows, Boston Coolers, Orange Creamsicle Floats, and many fruit-based creations.

This homemade Rhubarb Ice Cream Float follows the same nostalgic idea but swaps traditional soda for homemade rhubarb syrup and sparkling water. The result is lighter, fruitier, and allows the fresh rhubarb flavour to remain the star of the drink.

How Is This Rhubarb Float Different?

Classic ice cream floats are usually made with flavoured sodas like root beer, cola, or orange soda. This homemade rhubarb float takes a lighter approach, letting fresh rhubarb shine while still delivering the creamy, fizzy experience that makes floats so irresistible.

Naturally balanced. Rhubarb brings a pleasant tartness that keeps the drink from becoming overly sweet.
Fresh fruit flavour. Homemade rhubarb syrup gives the float a brighter, more natural taste than many commercial sodas.
Creamy yet refreshing. Vanilla ice cream softens the tartness while sparkling water keeps the drink light and bubbly.
Easy to customize. From berries and citrus to floral flavours or even a splash of spirits, this float adapts beautifully to your taste.

Ingredients You’ll Need for This Rhubarb Ice Cream Float

You only need a few simple ingredients to make this creamy rhubarb ice cream float. Each one plays an important role in creating the perfect balance of tart fruit, smooth vanilla, and refreshing fizz.

Rhubarb syrup. Homemade is ideal for the freshest flavour, but a good-quality store-bought syrup works as well. How to Make Rhubarb Syrup (Less Sweet, Perfect for Cocktails)
Sparkling water or club soda. Sparkling water adds gentle bubbles without overpowering the rhubarb. Club soda works equally well if you prefer a slightly less sweet drink.
Vanilla ice cream. The classic choice that creates a rich, creamy foam.
Heavy cream or half-and-half (optional). Adds even more creaminess for a richer dessert-style float.
Ice cubes (optional). Helpful if using sparkling water on a hot day.

Possible Additions and Variations

One of the best things about this rhubarb float recipe is how easy it is to customize. Try one or two of these additions to create your own favourite version.

Vanilla bean. A few scraped seeds add extra aroma.
Orange zest or juice. Bright citrus pairs beautifully with rhubarb.
Strawberry syrup. A natural companion that softens rhubarb’s tartness.
Raspberry syrup. Adds deeper berry flavour and colour.
Rose syrup. A delicate floral twist that complements rhubarb wonderfully.
Fresh lemon or lime juice. Just a squeeze makes the flavours even brighter.
Fresh berries. Garnish with strawberries, raspberries, or blueberries.
Mint leaves. A refreshing finishing touch.
Toasted almonds or pistachios. Sprinkle over the ice cream for extra crunch.

Sparkling rhubarb drink with homemade rhubarb syrup before adding the ice cream for a rhubarb float.

What Ice Cream Works Best?

Although vanilla remains the classic choice, several other flavours work surprisingly well with rhubarb float.

Vanilla. Rich, creamy, and the best all-around option.
Strawberry. Creates a delicious berries-and-rhubarb combination.
Frozen yogurt. A lighter alternative with pleasant tanginess.
Cheesecake. Rich and slightly tangy, reminiscent of rhubarb cheesecake.
Lemon. Bright, citrusy, and especially refreshing.
Coconut. A delicious dairy-free option with a subtle tropical note.

Can I Make This Rhubarb Float with Sorbet?

Absolutely. Rhubarb, cherry, strawberry, raspberry, coconut, orange, or lemon sorbet all make excellent substitutes for ice cream. The result is lighter and fruitier, with a cleaner finish and less creaminess, making it especially refreshing on hot summer days.

What’s the Best Sparkling Drink for a Rhubarb Float?

The sparkling drink you choose can noticeably change the flavour of your Rhubarb Ice Cream Float. The best option also depends on how sweet your rhubarb syrup and ice cream are. If your syrup is quite tart, sweeter drinks like lemonade or ginger ale can work beautifully. If your syrup is already sweet, sparkling water or club soda usually create a more balanced float.

Sparkling water (best overall). Lets the fresh rhubarb flavour shine and keeps the float light and refreshing. My top recommendation for most homemade syrups.
Club soda. Similar to sparkling water but with added minerals. A great choice if you prefer a less sweet drink.
Lemonade. Best if your rhubarb syrup is quite tart. If both the syrup and ice cream are already sweet, the float can become overly sweet.
Ginger ale. Adds gentle spice and sweetness. Works best with tart homemade syrup.
Lemon-lime soda. Refreshing but noticeably sweeter than sparkling water, so it’s best used with less sweet syrup.
Tonic water. Its pleasant bitterness can work surprisingly well with rhubarb, although it creates a more grown-up flavour profile and isn’t for everyone.
Cola or root beer. Fun to experiment with, but their bold flavours tend to overpower the rhubarb rather than complement it.

sparkling rhubarb drink with fresh rhubarb garnish.

Can I Turn This Float Boozy?

This rhubarb float is just as delicious as an adult dessert drink. Simply add the alcohol to the glass before pouring in the sparkling drink, then finish with the ice cream.

Sparkling wine. Replace the sparkling water entirely with chilled Prosecco, Cava, or another dry sparkling wine for an elegant brunch or dessert float.
Sparkling apple cider. Replace the sparkling water with chilled sparkling apple cider for a crisp, fruity variation that’s especially nice in late summer and autumn.
Gin. Add ½–1 oz (15–30 ml) for a botanical twist that pairs beautifully with rhubarb.
Vodka. Add ½–1 oz (15–30 ml) for a clean flavour that lets the rhubarb remain the star.
White rum. Add ½–1 oz (15–30 ml) for a slightly sweeter, tropical-inspired float.
Amaretto. Add ½ oz (15 ml) for a richer dessert-style version with subtle almond notes.

How to Assemble and Serve

Making a homemade rhubarb float couldn’t be easier. Assemble it just before serving so the bubbles stay lively and the ice cream keeps its shape.

Chill the glass. A cold glass helps keep everything frosty.
Add the rhubarb syrup. Pour it into the bottom of the glass.
Add alcohol, if using. Mix it with the syrup before adding the sparkling drink.
Pour in the sparkling water. Add it slowly to preserve the bubbles.
Add ice, if desired. Especially helpful when using sparkling water.
Top with the ice cream. One or two generous scoops create the signature creamy foam.
Garnish and enjoy. Finish with mint, berries, orange zest, or a rhubarb ribbon and serve immediately with a straw and a long spoon.

More Delicious Rhubarb Drinks and Treats

If you enjoy this Rhubarb Ice Cream Float, you might also like some of these other rhubarb favourites:

I’d love for you to try this vanilla ice cream and rhubarb syrup float. If you give it a go, please share your results in the comments, message me on Instagram, or post your photos with the hashtag #havocinthekitchen. I look forward to seeing your creations and hearing your thoughts.

Cheers!

Creamy Rhubarb Ice Cream Float garnished with chopped pistachios