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Keto ‘Sugar-Free’ Simple Syrup

keto simple syrup
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Simple syrup is the essential ingredient to so many cocktails, so making this key ingredient sugar free is pretty much life changing.

The first time I made it, I used erythritol and was devastated when it all crystallized and rendered itself useless. Not that I’m against the use of erythritol at all, far from it. I just don’t like using it in recipes that need to be cold as it has a nasty habit of crystallizing.

On to the recipe!

Simple syrup is super easy to make, all you need is your sweetener. My preferred one for this purpose is Allulose. Allulose is a relatively new sweetener on the market. I find it tastes the same as sugar and has almost the same texture as well, but it contains minimal calories and carbs. It also does not upset your stomach like some of the alcohol sugars can.

This recipe is pretty simple. It is for a straight simple syrup where it is 1:1 with water, adjusted here because the sweetener is not quite as sweet as sugar.

There are endless variations to the recipe, you can even add herbs and spices! I’ll be posting other syrup recipes soon!

Let me know how yours turns out.

Hope you enjoy it!

keto simple syrup
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Simple syrup is the essential ingredient to so many cocktails, so making this key ingredient sugar free is pretty much life changing.
Prep Time: 10 minutes
Cool time: 30 minutes
Total Time: 40 minutes
Course: Cocktails
Cuisine: bar
Servings: 12
Calories: 0.1kcal


  • 1 cup Water
  • 1 1/3 cup Allulose

    If you prefer this less sweet, use only 1 cup


  • Place water and Allulose in sauce pan.
  • Bring the water to a low simmer so sweetener has completely dissolved.
  • Remove from heat.
  • Let the syrup cool.
  • Store it in a glass container in the refrigerator for two to three weeks.


Calories: 0.1kcal | Carbohydrates: 1g | Sodium: 1mg | Sugar: 1g | Net Carbs: 0g | Allulose: 1g


You can use another sweetener if you prefer but I don’t recommend erythritol due to crystalizing.
This sweetener, Sweet Cheat Spoonable Monk Fruit, could work too but is not my first choice. If you use this one – reduce sweetener to ¼ of the suggested amount.


Nutritional Information and portions are estimated from the USDA Food Database. Net carbs exclude fiber, sugar alcohols, and products like allulose, because they do not generally affect blood sugar. I try to be accurate, but feel free to make your own calculations.

Tried this recipe?Mention @LaFemmeNikketo or tag #lafemmenikketo!

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Nikkey Elizabeth | La Femme Nikketo

Welcome! I'm Nikkey Elizabeth.

Two years ago, for health reasons, I was determined to make a Low Carb, High Fat, Keto diet work for me as a lifestyle, without the exercise in deprivation with constant calls to the fun police. Hi! My name is Nikkey Elizabeth and this is totally me, in my happy place doing one of my favourite things: hiking in the Cape Breton Highlands…
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