Sugar-Free Keto Lemonade | Single Glass Recipe

Glass of sugar-free keto lemonade over ice, with lemons and a striped napkin beside it
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Introduction

Half a lemon, a glass of water and a tablespoon of sweetener. That is the entire thing, and it tastes like lemonade rather than like something standing in for it.

Lemonade Without the Sugar

Lemonade is a classic delicious drink that everybody loves. Seriously, I’m pretty sure that at some point the entire world has come together to unanimously decide that lemonade is good. You can’t deny it. What keeps it off a keto day is the sugar — a tall glass of the ordinary kind carries a good deal of it.

One Glass at a Time

I make lemonade by the glass rather than by the pitcher, which is why the recipe is written that way; scale it up if you would rather have a jug of it in the fridge. Fresh lemons are better in my opinion, but bottled juice works here.

Granulated Monk Fruit or Liquid Extract?

Lakanto granulated and liquid monk fruit sweeteners

Dylan and I use Lakanto’s granulated monk fruit sweetener here, and the tablespoon in the recipe is that blend. It takes a little stirring to dissolve in a cold glass; a liquid monk fruit extract goes in instantly instead, which is the appeal of it — but an extract is a concentrate dosed in drops rather than spoons, so follow the dosing on your own bottle rather than the tablespoon below. We use Lakanto because we don’t get an aftertaste from it, and that is hard to hide in something as plain as lemonade.

Not sure which sweetener you have? Our monk fruit sweetener guide compares the different blends and liquid extracts.

You’ll find the full per-serving breakdown — calories, fat, fiber, protein, and net carbs — in the Nutrition Facts panel with the recipe below.

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Enjoy!

Sugar-Free Keto Lemonade | Single Glass Recipe

2 net carbs
Total Time
5 minutes
Yield
1 serving
Course
Drink
Cuisine
American

Ingredients

Nutrition Facts

1 serving per recipe
Saturated Fat 0g 0% 0g 0%
Trans Fat 0g 0% 0g 0%
Cholesterol 0mg 0% 0mg 0%
Allulose 0g 0% 0g 0%

About these numbers: We are home cooks, not certified nutritionists. Nutrition is shared as a courtesy. We pick a representative product for each ingredient, and our recipe system works out the totals from the amounts in this recipe, so please treat them as a helpful estimate rather than a guarantee. The brands you buy, any swaps you make, and how generously you portion the recipe will all move these numbers.

Directions

  1. Add lemon juice to glass, followed by water.

  2. Add in sweetener and stir until well mixed.

  3. Add desired amount of ice. Enjoy!

Correction — September 15, 2026: The sweetener section now attributes measuring 1:1 with sugar to the blend that is formulated to do it, not to monk fruit, and describes what the sweetener does in the recipe rather than its effect on blood sugar.