Creamy Adult Root Beer Float Cocktail: The Ultimate Spiked Nostalgia
There’s something undeniably magical about a classic root beer float. It’s a sip of childhood, a fizzy, creamy indulgence that instantly transports you back to simpler times. But what if you could take that beloved nostalgic treat and elevate it for the grown-up palate? Enter the Root Beer Float Cocktail – a sophisticated, boozy twist on a timeless favorite, perfect for adults looking to relive those sweet memories with a spirited kick.
This isn’t just any cocktail; it’s a smooth, decadent fusion where the rich, caramelized vanilla notes of premium ice cream dance with the distinctive, bold flavors of cold root beer. As they slowly meld together, they create a frothy, delightful concoction that’s reminiscent of a gourmet vanilla malt, but with an intriguing, subtle bitter bite from the added spirit. It’s an ideal beverage for your next backyard barbecue, a relaxed evening with friends, or simply a luxurious treat when you want something truly special. Remember, while it tastes like a childhood dream, this luscious drink is strictly for the adults!

Why This Root Beer Float Cocktail is a Must-Try
We all love a good root beer concoction, and over the years, we’ve explored many delightful variations, from playful root beer float cupcakes to our incredibly popular no-churn root beer float ice cream. While those are fantastic for all ages, my goal with this recipe was to craft something exclusively for grown-ups. Something that offered the familiar comfort of a float but with an added layer of complexity and warmth that only a well-chosen spirit can provide.
The beauty of this cocktail lies in its versatility and the unexpected depth of flavor it achieves with just a few simple ingredients. The combination of creamy vanilla ice cream and fizzy root beer forms the perfect canvas for experimentation with various spirits, allowing you to tailor the drink to your personal preference or the preferences of your guests. It’s more than just a drink; it’s an experience, a journey back in time with a grown-up upgrade.
Choosing Your Spirit: A Delicious Experiment
I embarked on a delicious journey, testing this recipe with several different alcoholic additions to find the perfect pairing. Each spirit brought its unique character to the classic root beer float, transforming it in fascinating ways:
- Butterscotch Schnapps: The Sweet Tooth’s Dream. My personal favorite, hands down, was butterscotch schnapps. As someone with a significant sweet tooth, I found that its rich, buttery caramel notes beautifully enhanced the inherent caramel undertones of the root beer. It also complemented the vanilla ice cream impeccably, creating a truly decadent, harmonious blend that felt like a dessert in a glass. This option yields a very sweet and smooth cocktail, perfect for those who enjoy dessert-like drinks.
- Tequila: A Bold and Zesty Twist. For those who appreciate a drink with a bit more zest and a distinct “bite,” tequila proved to be an exciting choice. It introduced a sharp, earthy counterpoint to the sweetness of the float, making for a surprisingly refreshing and sophisticated cocktail. If you’re a tequila enthusiast looking for an innovative way to enjoy your favorite spirit beyond margaritas, this is a must-try. Opt for a blanco (silver) tequila for a cleaner taste, or a reposado for a subtle oaky hint.
- Vanilla Vodka: Subtly Smooth. Interestingly, vanilla vodka, while seemingly a natural fit, was a bit too subtle for my taste. It blended almost seamlessly with the vanilla ice cream, making its alcoholic presence less pronounced. However, if your preference leans towards lighter, more understated drinks where the alcohol gently enhances rather than dominates, vanilla vodka could be your ideal choice. It adds a lovely smoothness without overpowering the classic float flavors.
- Dark Rum: The Classic Cooler. My dad, a self-proclaimed “Rum & Coke” fan, was particularly fond of the dark rum version. The rich, molasses-like sweetness and spicy undertones of a good dark rum (especially an aged or spiced variety) added considerable depth and warmth to the root beer float. It created a robust, comforting cocktail that felt both familiar and new, perfect for those who enjoy a heartier, more complex flavor profile.
Don’t be afraid to experiment with other spirits too! A spiced rum could add a lovely warmth, or even a splash of bourbon might introduce interesting oak and vanilla notes. The key is to find what you enjoy most!
Related Post: Root Beer Float Pie

The Best Root Beer and Ice Cream Choices for Your Cocktail
While the spirit is important, the foundation of any great root beer float is, naturally, the root beer and ice cream themselves. Not all root beers are created equal, and your choice can significantly impact the final flavor of your cocktail:
- Root Beer Selection: Some root beers are very sweet and creamy, while others lean towards a spicier, more sarsaparilla-forward profile. Craft root beers often offer unique botanical notes that can add an extra layer of complexity. Experiment with different brands to find one you love. A classic, creamy root beer will make for a smoother cocktail, while a spicier one can add an interesting kick. Ensure it’s well-chilled for maximum fizziness and refreshment.
- Ice Cream Varieties: While vanilla ice cream is the classic choice for a reason – its creamy texture and sweet vanilla perfectly complement the root beer – don’t hesitate to branch out. A high-quality vanilla bean ice cream will elevate the flavor, but you could also try chocolate ice cream for a “black cow” twist, coffee ice cream for a mocha float vibe, or even a custom root beer ice cream if you have some on hand! The key is a rich, creamy ice cream that melts beautifully into the soda.
Tips for Crafting the Perfect Adult Root Beer Float
Making an outstanding root beer float cocktail is simple, but a few tips can ensure you achieve that ideal frothy head and balanced flavor:
- Chill Your Mugs: For the ultimate frosty experience, place your glass beer mugs in the freezer for at least 30 minutes before assembling your cocktails. This helps keep the drink colder longer and prevents the ice cream from melting too quickly.
- The Pouring Technique: The order in which you add ingredients matters. Pouring half of the root beer first, then adding the ice cream, and finally topping with the remaining root beer helps create that signature frothy head. The carbonation reacts with the ice cream to create a delightful foam.
- Room for Foam: Don’t fill your mug to the brim with ice cream and root beer right away. Leave plenty of space for the foam to expand.
- Generous Scoop: A generous scoop (or two!) of vanilla ice cream is essential for that creamy texture and delightful melt. Don’t be shy!
- Garnish with Flair: Maraschino cherries are traditional, but consider other garnishes. A dollop of whipped cream, a drizzle of chocolate syrup, or even a sprinkle of root beer candies can elevate the presentation and add extra flavor.
How to Make a Root Beer Float Cocktail
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For ONE cocktail you will need:
- 3/4 cup root beer, separated and well-chilled
- 2 oz butterscotch schnapps (or your preferred spirit: dark rum, tequila, vanilla vodka, or even bourbon)
- 1 generous scoop vanilla ice cream (or preferred flavor like vanilla bean, chocolate, or coffee)
- Maraschino cherries, optional, for garnish
- Optional: Whipped cream, chocolate syrup, or a sprinkle of cinnamon for extra flair
You’ll also need:
- Glass beer mug or tall glass (chilled)
- Ice cream scoop
- Measuring cup and jigger for liquids
- Fun colorful straw
Instructions:
1. Begin by pouring half of the chilled root beer into your pre-chilled glass mug. This initial layer provides a base for the ice cream.
2. Carefully add one generous scoop of vanilla ice cream into the mug. It will sink slightly into the root beer, beginning the delightful melding process.
3. Pour 2 ounces of butterscotch schnapps (or your chosen spirit) directly over the top of the ice cream. This ensures the alcohol is well distributed as the ice cream melts.
4. Slowly top with the remaining root beer. This final pour is crucial for creating that beautiful, frothy foam that is characteristic of a perfect root beer float. Pouring it slowly down the side of the glass can also help control the foam.
5. Garnish with a Maraschino cherry or a swirl of whipped cream, and serve immediately with a fun, colorful straw to stir and enjoy the creamy layers. Stir gently before sipping to combine all the delicious flavors.
Quick Tip: A standard 12-ounce can of root beer typically yields enough for two perfect root beer float cocktails, so plan accordingly if serving a crowd!

When and Where to Enjoy Your Spiked Float
This root beer float cocktail is more than just a drink; it’s an occasion. It’s the perfect cold, refreshing indulgence on a hot summer day, a delightful companion for a relaxed barbecue, or the ultimate sweet treat for a late movie night. Imagine sipping on this creamy concoction as the sun sets, or enjoying it as a unique dessert cocktail after a delicious meal.
It’s also surprisingly versatile for various gatherings. Hosting a game night? Serve these up for a fun and unexpected twist. Having friends over for a casual get-together? These floats are a guaranteed crowd-pleaser. And if you happen to have some homemade root beer ice cream chilling in the freezer, I bet it would make an absolutely phenomenal replacement for the vanilla, adding an extra layer of root beer flavor that is simply irresistible!

Frequently Asked Questions (FAQs) About Root Beer Float Cocktails
Here are some common questions you might have about making and enjoying your adult root beer float:
- Can I make this non-alcoholic? Absolutely! Simply omit the butterscotch schnapps or other spirit. You’ll have a classic root beer float that everyone can enjoy.
- Can I use diet root beer? Yes, you can. Using diet root beer will reduce the sugar content, but be aware that it might affect the texture and foam slightly, and some people notice a difference in taste.
- What if I don’t have butterscotch schnapps? No problem! As discussed, dark rum, tequila, or vanilla vodka are excellent substitutes. You could also try a spiced rum, a coffee liqueur, or even a hint of Irish cream for a different flavor profile.
- How can I make it creamier? For an even creamier cocktail, add an extra scoop of ice cream or a splash of heavy cream or milk when you add the spirit.
- Can I make a big batch for a party? Root beer floats are best assembled individually just before serving to maintain their fizziness and frothy head. However, you can pre-measure your spirits and chill your mugs in advance to speed up the process for a crowd.
- How long does it last? This cocktail is best enjoyed immediately. The ice cream will melt, and the root beer will lose its fizz if left to sit for too long.
- What are some other garnish ideas? Besides Maraschino cherries and whipped cream, consider shaved chocolate, a sprinkle of cinnamon, a drizzle of caramel or chocolate sauce, or even a mini root beer candy on the rim.
Do you have a favorite summer cocktail that beats the heat and brings a smile? Here are a couple more ideas for you to explore, alongside some fantastic non-alcoholic refreshers:
More Refreshing Summer Drinks (Spiked & Unspiked!)
This vibrant White Sangria is a true summer gem. Crafted with a crisp white Moscato, an abundance of fresh, juicy fruits, a touch of effervescence from carbonated water, and a splash of orange liqueur, it’s a wonderfully sweet and incredibly refreshing beverage. It’s absolutely perfect for sunny summer get-togethers, lively barbecues, or elegant bridal showers. And speaking of delightful sips, I’m absolutely dying to try these tempting Pomegranate Vodka Gimlets, especially after my girlfriend raved about them following Memorial Day celebrations! They sound like a wonderfully sophisticated choice.
If you’re simply in search of something cold and utterly refreshing that doesn’t involve alcohol, this fantastic Olive Garden Peach Tea copycat recipe is positively delicious and hits all the right notes. Its sweet, fruity flavor is incredibly satisfying on a warm day. Of course, if you decide you *do* want a little kick, you could certainly add a splash of vodka or peach schnapps to it – it’s wonderfully adaptable!
And for those times when you crave a frosty, coffee-shop-style treat, why spend a fortune at Starbucks when you can effortlessly whip up your own Mocha Frappuccinos at home? They’re rich, icy, and incredibly satisfying. Just make sure you have a good quality blender on hand, as you’ll need its power to tackle some serious ice crushing for that perfect, smooth texture!

Root Beer Float Cocktail
IMPORTANT – There are often Frequently Asked Questions within the blog post that you may find helpful. Simply scroll back up to read them!
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Ingredients
- ¾ cup root beer separated and well-chilled
- 2 oz butterscotch schnapps may substitute dark rum, tequila, vanilla vodka, or even bourbon
- 1 generous scoop vanilla ice cream or preferred flavor like vanilla bean, chocolate, or coffee
- Maraschino cherries optional, for garnish
- Optional: Whipped cream, chocolate syrup, or a sprinkle of cinnamon for extra flair
Instructions
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Prepare Your Glass: For best results, chill your glass beer mug in the freezer for at least 30 minutes before starting. Pour half of the well-chilled root beer into the mug.
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Add Ice Cream & Spirit: Carefully add one generous scoop of vanilla ice cream to the mug. Then, pour the 2 ounces of butterscotch schnapps (or your chosen spirit) directly over the top of the ice cream.
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Top with Root Beer: Slowly top with the remaining root beer. This final pour will react with the ice cream to create a beautiful, frothy foam.
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Garnish & Serve: Garnish with Maraschino cherries and add a fun, colorful straw. Serve immediately and enjoy the creamy, fizzy indulgence!
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Batch Note: One 12-ounce can of root beer typically makes 2 perfect root beer float cocktails.
The recipes on this blog are tested with a conventional gas oven and gas stovetop. It’s important to note that some ovens, especially as they age, can cook and bake inconsistently. Using an inexpensive oven thermometer can assure you that your oven is truly heating to the proper temperature. If you use a toaster oven or countertop oven, please keep in mind that they may not distribute heat the same as a conventional full sized oven and you may need to adjust your cooking/baking times. In the case of recipes made with a pressure cooker, air fryer, slow cooker, or other appliance, a link to the appliances we use is listed within each respective recipe. For baking recipes where measurements are given by weight, please note that results may not be the same if cups are used instead, and we can’t guarantee success with that method.

