Watermelon Ice Cream Floats

My neighbor's daughter showed up at our door last July clutching a small watermelon she'd grown herself, beaming like she'd harvested gold. We turned it into these floats that afternoon, sitting on the porch steps while the ice cream melted into pink swirls. Something about that combination of icy watermelon and cream bubbling up in soda glasses made the heat feel magical instead of oppressive.

Last summer I made these for my niece's birthday party, setting up a little float station with bowls of mint and extra watermelon balls. The kids went quiet for exactly three seconds before excited whispers erupted. Nothing beats watching someone's eyes light up when that first fizz rises up the glass.

Ingredients

• Seedless watermelon: Chilling it beforehand makes all the difference in the final temperature
• Fresh lime juice: Brightens the watermelon and keeps it from tasting too sweet
• Vanilla ice cream: Classic choice, but coconut or strawberry ice cream bring their own magic
• Lemon-lime soda: The bubbles create that irresistible foam we all love from childhood
• Fresh mint: More than decoration, it adds an aromatic note that cuts through the cream

Instructions

Blend the base:

Toss your chilled watermelon cubes and lime juice into the blender and puree until completely smooth

Strain for silkiness:

Pour through a fine-mesh sieve if you want that restaurant-quality texture, though I usually skip this step when I'm feeling lazy

Build your floats:

Divide the watermelon puree among tall glasses, add generous scoops of ice cream, then slowly pour the chilled soda down the side

Save

My grandmother used to say some treats are just meant to be eaten quickly while they're still doing that happy dance in your glass. These floats became our go-to celebration last summer, marking everything from good grades to finally fixing the sprinkler system.

Making It Your Own

I've discovered that club soda works beautifully if you want something less sweet, letting the watermelon really shine. Once I used strawberry soda and it tasted like a childhood memory I didn't know I had.

Serving Suggestions

Tall clear glasses show off those gorgeous pink layers, but mason jars work just fine for backyard gatherings. Keep extra ice cream nearby because someone always wants seconds.

Make It A Party

Set up a float bar with different soda options and let guests build their own combinations. The anticipation alone is half the fun.

• Have watermelon balls pre-scooped and ready in a bowl
• Offer both dairy and dairy-free ice cream options
• Keep plenty of napkins within reach because sticky hands are guaranteed

Save

Some recipes are just about simple happiness in a glass.

Recipe FAQs

→ Can I make these floats ahead of time?

These floats are best assembled and served immediately. However, you can prepare the watermelon puree up to 24 hours in advance and store it in the refrigerator. Keep all components chilled separately, then combine just before serving to maintain the fizz and prevent the ice cream from melting.

→ What type of soda works best?

Lemon-lime soda provides a classic sweet flavor that complements the watermelon beautifully. For less sweetness, try club soda or sparkling water with a splash of lime. Ginger beer adds a spicy kick, while cream soda creates an extra rich profile. Always choose well-chilled options for the best foam and fizz.

→ How do I make dairy-free version?

Simply swap traditional vanilla ice cream for your favorite dairy-free alternative. Coconut milk-based options add a subtle tropical flavor, while almond or oat varieties remain more neutral. The texture and creaminess work just as well, making these floats accessible for vegan or lactose-sensitive guests.

→ Do I have to strain the watermelon puree?

Straining is optional but recommended for the silkiest texture. The fine-mesh sieve removes any fibrous bits and seeds you might have missed, resulting in a smooth, drinkable puree. If you prefer more texture or don't mind a slightly chunkier consistency, feel free to skip this step and blend until smooth.

→ Can I use frozen watermelon?

Frozen watermelon works perfectly and actually helps create an extra frosty, slush-like texture. There's no need to thaw first—just blend the frozen chunks with lime juice. The frozen fruit also acts as ice, keeping your float colder longer without diluting the flavors like regular ice would.

→ What other ice cream flavors pair well?

While vanilla is classic, try strawberry or coconut for fruity variations. Mint chip adds a refreshing twist, while honey lavender creates an elegant flavor profile. For something indulgent, cookies and cream or salted caramel provide delicious contrast to the bright watermelon base.