3-Ingredient Sugar-Free Simple Syrup
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Once I started making this keto simple syrup at home, I never looked back at store-bought versions. The ingredient lists on those bottles are long, the price is high, and most of them have an aftertaste that gives them away immediately. This homemade sugar-free syrup uses three clean ingredients, costs a fraction of the price, and gives you complete control over what goes into everything you sweeten. It is the kind of small kitchen staple that quietly makes a big difference in how you cook and drink every day.
The whole family has claimed it as their own at this point. My kids love it stirred into their lemonade, my husband adds it to his morning bone broth latte, and it is what I reach for when I want a reliable liquid sweetener for baking. One batch goes a long way, and having a jar ready in the fridge means we are never without a clean, sugar-free option.
A few things worth knowing before you make it: the consistency may be slightly thinner than traditional simple syrup, and the color can range from clear to lightly cloudy or amber, depending on your water and sweetener. Neither affects the flavor nor its performance. Whether you are winding down with a mug of hot chocolate or mixing berry mocktails for friends on the weekend, this sugar-free simple syrup keeps everything sweet without the crash or compromise.
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How to Make Sugar-Free Simple Syrup
You’ll love how simple this from-scratch recipe is. With just 15 minutes of active time, you’ll have sugar-free simple syrup ready to enjoy. Don’t skip the cooling time, though! It gives the syrup a chance to thicken slightly and allows the flavors to settle for a smoother, more consistent taste in every pour. It also helps prevent condensation when storing.
Scroll to the bottom of this post for a printable recipe card with a full list of ingredients, measurements, and step-by-step instructions.
Ingredient Notes
- Water: For best results, use distilled water.
- Powdered sweetener: Use powdered allulose or erythritol to create a smooth and consistent syrup without graininess. Granulated sweetener may not dissolve adequately in liquid. If you only have granulated sweetener, grind it first in a Magic Bullet, coffee grinder, or blender.
- Xanthan gum: The thickening agent that helps stabilize the simple syrup, preventing unwanted crystallization. Xanthan gum helps the syrup retain a viscous texture without the sweetener separating and settling at the bottom of the bottle.
Step-By-Step Instructions
Making keto simple syrup is as easy as 1, 2, 3! Simply dissolve the sweetener in water, mix in the xanthan gum, and let the mixture cool. Follow the step-by-step instructions below to get started!
- Dissolve sweetener in water on the stovetop.
- Whisk in xanthan gum.
- Cool in the pan, then transfer to a glass jar to use and store.
Expert Tips
- Infuse your syrup with sugar-free add-ins like vanilla extract, cinnamon sticks, citrus zest, fresh herbs like mint or rosemary, or even a splash of almond or coconut extract. These simple extras add flavor without adding sugar.
- Taste the syrup before bottling so you can adjust as you like best.
- Erythritol is more prone to crystallization than allulose. If you see signs of this, gently reheat the liquid in a small saucepan.
- I haven’t tested these, but if you don’t have xanthan gum, you can probably use an equal amount of guar gum for a similar effect. You could also try a pinch of unflavored gelatin. Please let me know if you try one of these options!
How to Store This Recipe
Store sugar-free simple syrup in an airtight container like a glass bottle or mason jar at room temperature for 1 day, then transfer to the refrigerator for 2 to 3 weeks. Labeling with the date helps you track freshness.
To freeze, allow the syrup to cool completely, then transfer to freezer-safe containers and seal tightly. If using glass containers, I recommend wide-mouth mason jars and leaving a one-inch headspace to allow room for expansion.Â
You can also portion the syrup into small servings using ice cube trays. After freezing, pop them out and transfer them to a freezer bag. You can thaw overnight at room temperature or gently reheat in a small saucepan.
What to Serve with Sugar-Free Simple Syrup
You can use keto simple syrup to sweeten anything you like. Add it to a cold brew coffee, tea, cranberry mocktails, or delicious cocktails like an espresso martini, a mint julep, and a lemon drop martini.Â
Drizzle it over pancakes, waffles, or chia pudding for a touch of sweetness, or mix it into yogurt, smoothies, and even salad dressings that call for a hint of sweet balance.
More Easy Condiments To Try
- Sugar-free pumpkin spice syrup
- Keto balsamic glaze
- Homemade mayonnaise
- Keto tzatziki sauce
- Roasted garlic butter
Keto Simple Syrup Recipe (No Crystals!)
Ingredients
- 1 cup water
- 1 cup powdered erythritol or allulose
- 1 teaspoon xanthan gum
Instructions
- Combine the water and sweetener in a small saucepan over medium heat. Stir until the sweetener dissolves completely.
- Bring to a boil, then reduce the heat and maintain a simmer for 10 minutes while the liquid thickens.
- Once you see the volume reducing, add the xanthan gum, and whisk vigorously to dissolve. The syrup will thicken and should be smooth. Whisk out any remaining clumps.
- Remove from the heat and let cool for 15 minutes before transferring to a clean glass jar or recycled syrup bottle. It will continue to thicken slightly as it cools.
Notes
Nutrition & Macros
To obtain the most accurate representation of the nutritional information in a given recipe, please calculate the nutritional information with the actual ingredients and amounts used, using your preferred nutrition calculator. Under no circumstances shall the this website and the author be responsible for any loss or damage resulting for your reliance on the given nutritional information.
