Low Sugar / Sugar Free Simple Syrup Recipe

Name: Low Sugar / Sugar Free Simple Syrup
Cook time: 5 min
Total time: 5 min
Ingredients: 1 cup allulose ((or granulated erythritol / monk fruit)); 1 cup water; ½ cup granulated cane sugar; ½ cup allulose; 1 cup water

posted by Alyssia Sheikh on July 7, 2021 (updated February 24, 2023)

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Sugar Free Keto Simple Syrup + Low Sugar Option

How to Make Keto Simple Syrup with Allulose – or Erythritol / Monk Fruit

For irresistible low carb and keto summer drinks, try this homemade sugar free simple syrup recipe! Just as satisfyingly sweet as any homemade simple syrup, but without the sugar content and carbs. Learn how to make keto simple syrup with allulose and water—or erythritol or monk fruit, if preferred. Plus, I’m sharing a low sugar simple syrup option made with a combination of allulose and cane sugar.

On a keto diet or low carb lifestyle, it can be tough to find tasty sugar free drink recipes and sweetener options. Thankfully, this homemade keto simple syrup is equal parts delicious and easy to prepare. Just bring your sweetener and water to a light simmer, stir until dissolved, and it’s ready! I find that allulose is the best-tasting option and it’s the most similar to regular sugar, but granulated erythritol or monk fruit will work as well.

Personally, since I’m not on a keto diet (or any diet), I prefer to prep this as a low sugar simple syrup recipe rather than totally sugar free. I simply use half allulose and half cane sugar, rather than all allulose. The result is a homemade simple syrup that’s just as sweet as a standard recipe, but with half the sugar! (And, no sweetener aftertaste.) Below, I’ve shared both recipe options for you to choose from.

What is Sugar Free Simple Syrup & Why Make It at Home?

In its classic form, simple syrup is just liquid sugar—equal parts sugar and water. To make a sugar free simple syrup recipe, all you need is an alternative granulated sweetener! The benefit of making simple syrup at home is that you control the ingredients. You choose the type of sweetener, you control how sweet it is, and you can have it ready in 5 minutes. Plus, you can even blend the sweetener with some sugar if you want a more authentic, sugary taste—still with half the sugar content!

Allulose Simple Syrup vs. Other Sweeteners

Generally, most sugar free keto simple syrup recipes are made with a natural, low carb granulated sweetener like monk fruit or erythritol. And both of these can work in this recipe as well! While granulated stevia might work, I personally am not a fan of the taste of stevia alone. I decided to make an allulose simple syrup recipe because I think that allulose has the best flavor that’s most similar to sugar.

You can make a completely sugar free keto simple syrup using your choice of sweetener—though this can have a subtle aftertaste or bitterness for some. Or, try my favorite method: a half and half mixture of allulose and cane sugar, for a low sugar simple syrup that tastes just like the real deal!

What is allulose?

Allulose is a natural sweetener that has no calories, no impact on blood sugar, and comes in a granulated form. It’s increasingly popular as a keto sweetener because allulose closely resembles sugar and is a great replacement for it. Allulose also dissolves nicely without any grittiness—which is why this allulose simple syrup turns out so great! I found an allulose blend at Trader Joe’s, but there are also options available online that you can order.

Is allulose ok for keto?

Yes, allulose is a great keto sweetener option! Per teaspoon, allulose contains 0 calories, 0g of sugar, and 4g of carbohydrate. However, similar to erythritol, the carbs in allulose don’t affect blood sugar or cause a glycemic response in the body because they’re primarily absorbed into the bloodstream. Allulose is an ideal source of sugary sweetness, except without any actual sugar or metabolized carbohydrates!

How to Make Keto Simple Syrup with Allulose (or Erythritol / Monk Fruit)

Once you’ve chosen the type of sweetener you’d like to use, the process is just as easy as any homemade simple syrup recipe!

Bring sweetener and water to a to a light simmer, stirring regularly.
Just before it boils, turn off the heat and stir until the sweetener dissolves.
Transfer to a container with a lid and allow to cool before storing in the fridge.

Low Sugar & Sugar Free Simple Syrup Ratio

Typically, the standard simple syrup ratio is 1-to-1: 1 cup of sugar to 1 cup of water. To make a low sugar or keto simple syrup recipe, the ratio is similar: 1 cup sweetener of choice to 1 cup water. For a low sugar version (rather than sugar free) simply use a mixture of sweetener and sugar.

Sugar Free Simple Syrup ratio: 1 cup allulose + 1 cup water
Low Sugar Simple Syrup ratio: ½ cup allulose + ½ cup sugar + 1 cup water

How to Make Keto Simple Syrup with Allulose — *To make a low sugar simple syrup, combine sugar, sweetener, and water in a pot over medium heat.*

Bring mixture to a light simmer, then turn off the heat just before it boils. — *Bring mixture to a light simmer, stirring regularly.* *Just before it boils*, turn off the heat and stir until all sweetener has dissolved.

Transfer homemade sugar free simple syrup to a jar to store. — *Transfer homemade simple syrup to a jar and allow to cool. Seal and store in the fridge for 1-3 months.*

Low Carb Summer Drinks Made with Homemade Simple Syrup

With a low sugar or sugar free simple syrup, you can enjoy all of the same sweetness in the summer drinks you love, but with a fraction of the carbs and sugars!

To see how my low sugar simple syrup is made, watch my Homemade Lemonade + Summer Drinks video!