This 3-minute Sugar-Free Simple Syrup in Microwave is one of my most straightforward recipes. You can use it to sweeten your favorite hot or cold teas, smoothies, mocktails, overnight oats, and puddings.
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About this recipe
Histamine-Friendly Simple Syrup: unlike a traditional white sugar simple syrup, this allulose & monk fruit-based version is virtually calorie-free & not inflammatory, making it a low histamine sweetener. All in all the allulose & monk fruit blend I use can be replaced 1:1 for sugar, but like with any other food, allulose should be (re)introduced to your diet slowly, and then moderately, and then in full portion sizes.
'Simplify' Your Beverages: whether making an iced ginger tea in the summer or drinking hot herbal tea in the winter, this homemade keto simple syrup will make it easy to sweeten drinks. From smoothies and mocktails to lattes and tisanes, now you can sip more sweetly without worrying about an increased histamine burden.
Long Lasting: you can store this homemade sugar-free simple syrup in the depths of your freezer for up to six months (or even a year, if stored particularly well), so you can make a larger batch and keep using it for a whole season.
Ingredients
Allulose & Monk Fruit: other than water, the only ingredient in this keto syrup is my favorite allulose & monk fruit sweetener blend. To me it has no aftertaste, and I even use it to sweeten my overnight oats and my morning beverage of choice.
However a very small portion of the population are super tasters, and to them allulose &/or monk fruit may taste somewhat bitter. Make sure you're not one of those people before you invest in a very large bag for mocktail-making.
How to make sugar-free simple syrup: step-by-step instructions
Step 1. Put the water and allulose into a microwave-safe glass bowl, then put it in the microwave for 3 minutes on high, keeping an eye on it after 2 minutes. You want to stop the microwave as soon as the mixture begins to boil, and stir it all together until the sugar is fully dissolved.
Step 2. Let it sit and cool for several minutes, then pour it into a glass jar, close the jar and store it in the fridge for up to 2 weeks or the freezer for up to 6 months.
Recipe notes & tips
Use the Right Bowl: Make sure you're using a glass or ceramic bowl that's microwave-safe; otherwise it won't be able to get hot enough to dissolve the sugar and become its signature syrupy self. I don't recommend using a metal bowl, as the entire thing will get too hot for you to even hold while you stir.
Swapping Sweeteners: You can use this method and this ratio with a number of other granulated sweeteners to make a microwave simple syrup, but it won't work with powdered sugar or stevia due to the consistency. Some other sweeteners you could try it with are brown sugar, coconut sugar, date sugar, panela, and jaggery.
Corn Allergies: If you have any issues with corn, make sure to buy your allulose from a company which specifically doesn't source their allulose from corn, as much allulose is manufactured from corn. However it's also found in small amounts in figs, raisins, wheat, maple syrup and molasses.
At roughly five times the price of white sugar, allulose can be a hard sell. But for those who choose to splurge for it, allulose has none of the inflammatory effects, doesn't cause tooth decay, has no calories, and has no effect on insulin.
What to do with simple syrup
- use it to sweeten mocktails (or even homemade cocktails!)
- add it to large batches of low histamine teas
- to soak into an unfrosted cake
- sweeten your morning non-caffeinated blue flower latte
- blend it into a vanilla flax pudding
- use is as a bonder for homemade granola
- mix it into your favorite smoothie
Microwave Simple Syrup FAQ
It takes about 2 minutes in a high-powered microwave for the water to get hot enough to make simple syrup in the microwave. Larger batches will take equivalently longer amounts of time to reach just-boiling temps.
Yes, in order to properly dissolve all of the sugar crystals, it's important to heat the water enough that even the largest sugar crystals melt and the two substances liquefy.
Yes! While a typical microwave simple syrup is made with refined white sugar, for a deeper more caramelized flavor, you can substitute the same amount of brown sugar.
You can't flavor it in the typical way that you would make a simple syrup, by infusing it with fresh or dried botanicals, but you could add a food-grade essential oil to flavor a microwave syrup.
Homemade Keto Simple Syrup Recipe Card
As always, if you like the recipe, I really appreciate a 5-star review or comment!
📖 Recipe
Sugar-Free Simple Syrup (Microwave Method)
Ingredients
- ½ Cup allulose or allulose monk fruit blend
- ½ Cup filtered water
Instructions
- Put the water and allulose into a microwave-safe glass bowl, then put it in the microwave for 3 minutes on high, keeping an eye on it after 2 minutes. You want to stop the microwave as soon as the mixture begins to boil, and stir it all together until the sugar is fully dissolved.
- Let it sit and cool for several minutes, then pour it into a glass jar, close the jar and store it in the fridge for up to 2 weeks or the freezer for up to 6 months.
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