Lemon-Lime Sugar-Free Protein Slushy Recipe
A frosty lemon-lime protein slushy blended with sugar-free clear whey, fresh citrus zest and ice.
Contains: Milk
Clear whey protein isolate contains milk. Use a product labelled sugar-free and gluten-free as specified, and check the package for any additional allergen or cross-contact information relevant to you.
WHY IT WORKS
Why This Recipe Works
01
Clear, Bright Flavor
Clear whey keeps the citrus profile lighter and more refreshing than a creamy shake-style protein powder.
02
Plenty of Ice
A generous amount of ice gives the drink its thick, spoonable slushy texture without adding sugar.
03
Blend Briefly
Stopping as soon as the ice is finely crushed helps keep the texture icy while limiting the foam that protein powders can create.
WHAT YOU’LL NEED
Equipment
THE RECIPE
Ingredients & Method
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My Notes
Ingredients
Method
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Add the cold water, clear whey protein powder, lemon zest and lime zest to the blender. Blend on low just until the powder is evenly dispersed.
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Add the ice cubes. Blend on high in short bursts until the ice is finely crushed and the mixture is thick and slushy. Stop as soon as the texture is even to avoid unnecessary foaming.
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Pour into a tall glass and serve immediately. If a foam layer forms, let the slushy stand briefly and stir before drinking.
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Change the quantities, measurements, pan, cooking method or ingredients, then turn what you need into a shopping list.
Dietary options
Make This Recipe Work for You
Only straightforward swaps are offered automatically. If changing a defining ingredient would effectively create a different dish, that conversion is left out.
Make It Vegan
Change the following ingredient:
Replace30 grams (g) sugar-free lemon-lime clear whey protein isolate powder, labeled gluten-free
With30 grams (g) sugar-free lemon-lime vegan protein powder, labeled gluten-free
Replace30 grams (g) sugar-free lemon-lime clear whey protein isolate powder, labelled gluten-free
With30 grams (g) sugar-free lemon-lime vegan protein powder, labelled gluten-free
Use a sugar-free lemon-lime vegan protein powder that blends smoothly with water. The finished texture may be slightly thicker or less clear than the whey version.
Make It Dairy-Free
Change the following ingredient:
Replace30 grams (g) sugar-free lemon-lime clear whey protein isolate powder, labeled gluten-free
With30 grams (g) sugar-free lemon-lime plant-based protein powder, labeled gluten-free
Replace30 grams (g) sugar-free lemon-lime clear whey protein isolate powder, labelled gluten-free
With30 grams (g) sugar-free lemon-lime plant-based protein powder, labelled gluten-free
A sugar-free lemon-lime plant-based protein powder is the closest straightforward dairy-free replacement; texture varies by product.
For allergies, intolerances or strict dietary requirements, check the labels of the specific products you use. These swaps do not certify a recipe or ingredient as allergen-free.
Recipe Notes
Ingredient Notes
Choose a lemon-lime clear whey protein isolate that is labelled sugar-free and gluten-free. Clear whey powders vary in sweetness and acidity, so use one you already enjoy mixed with water.
Useful Substitutions
If you only have one of the citrus fruits, use 1 teaspoon (tsp) total finely grated zest from either lemon or lime. The slushy will lean more strongly toward that citrus flavor.
INGREDIENT QUALITY
Quality Note
Clear whey powders vary in sweetness, acidity and how much they foam. A powder that tastes good mixed with plain cold water will give the most reliable result here.
COOKING TIPS
Tips
Start With Very Cold Water
Cold water helps the ice stay frozen longer and gives the finished slushy a thicker texture.
Add the Ice Last
Mixing the protein powder with the water before adding the ice helps disperse the powder more evenly.
Adjust the Texture at the End
If the slushy is too thick to move through the blender, add a small splash of cold water. If it is thinner than you like, blend in a little more ice.
Serve Straight Away
The texture is best immediately after blending, before the ice begins to melt and separate.
ESTIMATED PER SERVING
Nutrition
1 slushy
Nutrition information is an estimate. Where shown, % Daily Value uses standard US Daily Values for adults and children aged 4+; actual values vary with ingredient brands, exact quantities and portion size.
QUESTIONS
Lemon-Lime Sugar-Free Protein Slushy FAQs
Can I use regular whey protein instead of clear whey?
Yes, but the result will be creamier, more opaque and usually foamier. Use a sugar-free citrus-flavored whey if you want to keep the same lemon-lime profile.
Can I make this protein slushy dairy-free?
Yes. Replace the clear whey with a sugar-free lemon-lime plant-based protein powder. The texture may be slightly thicker or chalkier depending on the product.
Why does my protein slushy get foamy?
Protein powders trap air when blended. Use very cold liquid, blend only until the ice is crushed, and let the drink stand briefly before serving if a foam layer forms.
Can I make the slushy ahead of time?
It is best made just before serving. The ice melts during storage, so the mixture loses its slushy texture and can separate.
How do I keep the recipe sugar-free?
Use a clear whey protein powder that is labelled sugar-free, as specified in the ingredient list. Check the nutrition label because flavored protein powders vary by brand.
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