Looking for an easy sugar-free simple syrup that won’t crystallize or spike your blood sugar?
This keto simple syrup takes just 5 minutes, uses only 3 ingredients, and works perfectly in cocktails, coffee, teas, and more. Unlike many low-carb versions, this one stays smooth and pourable — no gritty texture, no weird aftertaste. All you need is water, a keto-friendly sweetener like allulose, and a pinch of xanthan gum if you want it thick. That's it.
Whether you're mixing margaritas or sweetening lemonade, this syrup gives you all the sweetness without the sugar.
Recipe
Keto Simple Syrup (3 Ingredients, Zero Sugar)
A quick, crystal-free keto simple syrup recipe made with allulose. Perfect for cocktails, coffee, and low-carb desserts.
Equipment
- 1 Small saucepan For heating the mixture
- 1 Whisk To dissolve and mix sweetener
- 1 Measuring cup For water and sweetener
- 1 Glass jar For storing finished syrup
Ingredients
- 1 cup water
- 1 cup allulose - or other keto sweetener
- ⅛ teaspoon xanthan gum - Optional, for thickening
Instructions
- Add the water and sweetener to a small saucepan over low heat
- Whisk continuously until the sweetener fully dissolves and the mixture begins to simmer.
- (Optional) Sprinkle in xanthan gum, whisking constantly to avoid clumps.
- Remove from heat and let the syrup cool completely.
- Pour into a glass jar or bottle and refrigerate. Use as needed.
Notes
- Sweetener tips: Allulose is ideal because it stays smooth and doesn’t crystallize. Avoid erythritol for syrups — it often hardens after cooling.
- Xanthan gum: Optional but helpful if you want a thicker, syrupy consistency. Add it gradually while whisking to avoid clumps.
- Flavor options: Try adding vanilla, cinnamon stick, mint, or citrus zest for extra flavor. Always add flavoring after cooling for best results.
- Storage: Keeps in the fridge for up to 6 months. Shake before each use.
Nutrition
Serving: 1tablespoonCalories: 0.1kcalCarbohydrates: 17gSodium: 2mgPotassium: 0.1mgFiber: 0.02gCalcium: 1mgMagnesium: 0.2mgNET carbs: 16.98g
Want to Change Something? Go Ahead!Feel like swapping an ingredient? Go for it—no need to ask! Try it your way and let us know how it turned out.
Laura Woodworth says
Thank you for all of the effort you share with us. The recipes are delicious and really help to maintain a healthier lifestyle with dieting.
16.98g NET CARBS per tablespoon is too much for keto diet. Could it be significantly less because allulose is not metabolized? I have seen reports of 70% excreted unchanged in urine. If 70% is subtracted, that would be around 5g Net Carbs per tablespoon which is OK for special treats.
Submitted respectfully.