Keto Hard Seltzer Strawberry Slushy
Published June 28, 2020 • Updated March 14, 2026
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I blend this keto strawberry slushy with hard seltzer and frozen strawberries for a sugar-free frozen cocktail that tastes like actual summer. At 82 calories a glass, I make two without thinking twice.
I started making this hard seltzer strawberry slushy after TikTok was flooded with White Claw slushie videos. Those versions were loaded with sugar, so I made my own low carb frozen cocktail that tastes better than the sugary originals. One blender, five ingredients, and you have a poolside drink that looks like you spent way more effort than you did.
The key to getting a real slushy texture (not a watery mess) is the ratio of ice to liquid. I use 3 cups of ice to 2 cans of hard seltzer and 2 cups of sugar-free ginger ale. If you want an even thicker consistency, freeze your White Claw in ice cube trays first. One of my readers suggested this and I tried it. He was right. Way less dilution, and the texture holds up even if you are sitting outside in the heat.
I have made this with White Claw, Truly, and a few store-brand seltzers. They all work. Berry-flavored White Claw is my go-to, but I have also done Black Cherry and Mango. Each flavor changes the slushy just enough to keep it interesting. I usually match the seltzer flavor to whatever frozen fruit I have on hand. Frozen mango with Mango White Claw is a combination I keep coming back to.
If you want something stronger, add a shot of vodka or rum on top after blending. I do this when it is just adults and nobody is driving anywhere. It layers nicely because the slushy is already cold and thick. For more cocktail ideas, try my keto margarita, keto strawberry daiquiri, keto mojito, or sugar-free vodka lemonade.
One thing I learned from reader feedback: the monkfruit sweetener is not actually optional. I listed it that way originally, but without it the ginger ale flavor steamrolls the strawberry. Even a tablespoon of powdered monkfruit fixes the balance completely.
This is the kind of recipe that makes eating low carb feel easy. Summer pool drinks were the thing I thought I was giving up, and this strawberry slushy proved me wrong.
How to make a white claw slushie
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Ingredients
3 cups ice -
1 cup frozen strawberries
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2 cans berry flavored hard seltzer, ie White Claw or Truly
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2 cups sugar-free ginger ale
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2-3 tablespoons powdered monkfruit, optional
Step by Step Instructions
Step by Step Instructions
Nutrition disclaimer
The nutrition information provided is an estimate and is for informational purposes only. I am a Doctor of Pharmacy (Pharm.D.); however, this content is not intended to be a substitute for professional medical advice, diagnosis, or treatment. Always consult your physician or other qualified health provider before making any lifestyle changes or beginning a new nutrition program.
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Get My Macros + Recipes →Frequently Asked Questions
Should I freeze the White Claw in ice cube trays before blending?
I tried this after one of my readers suggested it, and it works. Freezing the hard seltzer into cubes before blending gives you a much thicker slushy with less dilution. I do this when I know we will be drinking them outside in the heat, because the texture holds up way longer than using regular ice.
Is the monkfruit sweetener really optional?
I originally said it was optional, but after testing it both ways I changed my mind. Without the monkfruit, the ginger ale flavor takes over completely and you lose the strawberry sweetness. I add at least a tablespoon every time now. If you do not have monkfruit, erythritol or allulose work too.
Can I make a big batch of this for a party?
I have scaled this to 4x for pool parties and it works perfectly. Just multiply everything, blend in two batches (most blenders cannot handle that much ice at once), and pour into a pitcher. I keep extra in the freezer and re-blend for a few seconds when someone wants a refill.
What other fruit and White Claw flavor combos work?
I have tested a few and my favorites are frozen mango with Mango White Claw, frozen cherries with Black Cherry White Claw, and mixed berries with the berry flavor. I match the seltzer flavor to the frozen fruit so the flavors line up instead of competing.
How do I keep the slushy from getting watery if I'm drinking it outside?
I freeze the hard seltzer into ice cube trays beforehand, which cuts the melt problem almost entirely. If you skip that step, the slushy holds up for about 15-20 minutes in the shade before it starts thinning out. I also use a thicker glass (not a thin plastic cup) because it insulates better.
Can I add vodka or rum to make it stronger?
I do this when it is just adults. Add a shot of vodka or white rum on top after blending. The slushy is already thick and cold, so the spirit layers in nicely without watering it down. I would not add more than one shot per glass or it throws off the flavor balance.
Can I make this without alcohol?
I make the mocktail version for my kids all the time. Replace the hard seltzer with more sugar-free ginger ale or flavored sparkling water. I add a little extra monkfruit sweetener to the alcohol-free version because the seltzer provides some sweetness that you lose when you swap it out.
How many calories and carbs are in this slushy?
My version comes out to about 82 calories and 3g net carbs per serving. I have made two in one sitting without worrying about my macros, which is the whole point of making a keto version of this drink.
My 16-year-old spotted me making this, assumed it was a regular slushy, and drank half the batch before I said a word. The White Claw plus frozen strawberries really does taste like something from an actual bar menu, not a keto workaround.
Used a lime White Claw instead of berry (only thing I had), and with the frozen strawberries it tastes more like a frozen strawberry margarita than a slushy. Did not expect that. Good surprise.nnTip if your blender isn't high-powered: blend the ice and ginger ale first, then add the seltzer and strawberries. I got chunks the first two tries before I figured that out. Switched the order and it came out completely smooth.nnFour stars mostly because I'm still figuring out monkfruit amounts for my taste, but that's on me.
Summer pool drinks were the one thing I quietly accepted I was giving up on keto. Margaritas, frozen daiquiris, all of it, gone. Made this with White Claw last weekend and I actually teared up a little, which is embarrassing to admit but here we are. The strawberry is real, not that fake-candy sweet, and 82 calories meant I made two without thinking twice. Heavy rotation this spring.
Not embarrassing at all. Real frozen strawberries vs whatever those frozen drink mixes use - not close. Two at 82 is exactly the math I had in mind when I made this.
Made this on a snow day and the strawberry flavor hits way harder than I expected from a blended seltzer drink. Don't skip the monkfruit even though it says optional. Made it without and the ginger ale took over completely. Added a tablespoon on round two and it fixed it. Four stars because that caveat should probably be in the recipe.
The ginger ale really does steamroll everything without it. I'll add that to the notes.
Pro tip if you want more slush and less liquid: freeze your hard seltzer in ice cube trays first (I used White Claw) and it holds up SO much longer without watering down.
Freezing it first is so smart. Way less dilution and you get that thicker slush texture right away.
My sister texted me for the recipe after one sip.
Ha, that's the best kind of endorsement. I love that these hold up in the heat too (they don't get watery if you're outside for a bit).