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Keto Lemon Electrolyte Slurpee

4.5 stars, average of 2 ratings

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This easy slushie recipe is adapted from my Lemon Electrolyte Drink, one of our app users' favorites! It's the number one keto-flu remedy because it always works! If you tried and like it, you will love this summer inspired frozen version of it.

Or you can add more flavour by using berries and make a batch of my Keto Blueberry & Lemon Electrolyte Drink, or this delicious Strawberry & Lime Electrolyte Drink.

Recipe Tips

How to Make Purple Drink Without Food Dyes

To make this electrolyte drink purple I used butterfly pea tea flowers combined with lemon juice. Naturally blue butterfly pea tea will turn purple once mixed with acidic ingredients such as lemon juice. The longer you steep the flowers in water, the more vibrant the layer will become. Butterfly pea tea tastes neutral so it will taste like lemonade!

You can skip the butterfly pea tea flowers as they are only used for color. You can also substitute them with hibiscus flowers which will make the liquid pink and then the slurpee will turn red once combined with lemon juice. Unlike butterfly pea tea, hibiscus flowers will add some flavor and make the slurpee slightly more sour/acidic.

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How to Make One Serving at a Time

This recipe makes 6 servings so it's unlikely you'll need to make the whole batch at once. Instead, you'll likely need just one to two servings.

To make a serving, blend 1/3 cup (80 ml/ fl oz) of the purple liquid with 2/3 cup (160 g/ 5.6 oz) ice, or as much as needed for snow-like consistency. If the slurpee is too icy, add a dash of water. If it's too runny, add more ice.

You can make a quick electrolyte drink instead of a slurpee by mixing 1/3 cup (80 ml/ fl oz) of the purple liquid with 2/3 cup or more of still or sparkling water.

Top Tips For Making Electrolyte Drink at Home

Here are tips for making sugar-free electrolyte drink at home.

  • Drink with/after meals (not on an empty stomach). Start with a cup per day and increase to no more than 2 cups per day to avoid stomach discomfort. Too much magnesium citrate causes loose stools so keep that in mind. One cup will provide about 50% of your daily magnesium and two cups will cover your daily needs.
  • Instead of potassium chloride, you can use lite salt or cream of tartar. To read more about potassium supplements, check out this post: The Importance of Potassium in Low-Carb Diets.
  • Instead of Allulose, you can use other healthy low-carb sweeteners from this list. Stevia (in the form of drops) is a good option if you are following a low FODMAP diet. If you don't like sweeteners, they can be omitted altogether.
  • Make electrolyte drinks and drink them every day, especially if intermittent fasting is part of your lifestyle.

Hands-on Overall

Serving size about 1 cup, 240 ml/ 8 fl oz

Allergy information for Keto Lemon Electrolyte Slurpee

✔  Gluten free
✔  Dairy free
✔  Egg free
✔  Nut free
✔  Nightshade free
✔  Pork free
✔  Avocado free
✔  Coconut free
✔  Fish free
✔  Shellfish free
✔  Beef free

Nutritional values (per serving, about 1 cup, 240 ml/ 8 fl oz)

Net carbs1.8 grams
Protein0.1 grams
Fat0 grams
Calories6 kcal
Calories from carbs 91%, protein 4%, fat 5%
Total carbs1.8 gramsFiber0.1 gramsSugars0.5 gramsSaturated fat0 gramsSodium106 mg(5% RDA)Magnesium178 mg(45% RDA)Potassium208 mg(10% EMR)

Ingredients (makes 6 servings)


  1. Place 8 to 12 butterfly pea tea flowers into a jar filled with 1 1/2 cups of cold water. Let it steep at room temperature for at least 30 minutes or in the fridge for up to 8 hours. The longer you leave it the deeper the color. Remove and discard the flowers. Keto Lemon Electrolyte Slurpee
  2. Meanwhile, juice the lemons. Keto Lemon Electrolyte Slurpee
  3. Mix the blue tea with lemon juice to turn it purple. Add sweetener (Allulose or Erythritol) and stir until fully dissolved. Add magnesium, potassium, and salt. Keto Lemon Electrolyte Slurpee
  4. Place the purple liquid in a blender together with ice cubes. Keto Lemon Electrolyte Slurpee
  5. Blend until you get snow-like consistency. Keto Lemon Electrolyte Slurpee
  6. Serve immediately. You can make one or two servings at a time and keep the remaining purple liquid in the fridge until ready to make the slurpee.
    Note: See recipe tips for the amounts needed to make 1 serving at a time. Keto Lemon Electrolyte Slurpee

Ingredient nutritional breakdown (per serving, about 1 cup, 240 ml/ 8 fl oz)

Net carbsProteinFatCalories
Butterfly pea tea
0 g0 g0 g0 kcal
Water, still
0 g0 g0 g0 kcal
Lemon juice, fresh
1.3 g0.1 g0 g4 kcal
Allulose, natural low-carb sweetener
0.4 g0 g0 g2 kcal
Potassium chloride, supplement
0 g0 g0 g0 kcal
Salt, sea salt
0 g0 g0 g0 kcal
Natural Calm, magnesium supplement
0 g0 g0 g0 kcal
Ice cubes
0 g0 g0 g0 kcal
Total per serving, about 1 cup, 240 ml/ 8 fl oz
1.8 g0.1 g0 g6 kcal

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Martina Slajerova
Creator of

Martina Slajerova

I changed the way I ate in 2011, when I was diagnosed with Hashimoto’s, an autoimmune disease that affects the thyroid. I had no energy, and I found it more and more difficult to maintain a healthy weight.

That’s when I decided to quit sugar, grains, and processed foods, and to start following a whole-foods-based ketogenic approach to food.

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Comments (2)

Hi. The recipe list calls for 1.5 cups of water, but the description asks for 1 c. I was assuming 1.5 c was correct? I thought this would be a nice recipe to switch up with my the other electrolyte recipe on the ketodietapp. I am having the two cups per day and finding it to work well. TY!

Hi Alison, I just fixed the recipe instructions. You are right, the 1/2 cup got lost there. I used 1 cup to infuse and then added another 1/2 cup of water later but it's just easier to use 1 1/2 cups to start with. I hope you like it!