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‘Low-Carb’ Keto Golden Corn Syrup

‘Low-Carb’ / Keto Golden Mock Corn Syrup
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This homemade Keto Golden Corn Syrup is a recipe that I hope you love as much as I do. It’s incredibly useful when making some keto desserts to give them the right taste and texture that the really bad for you high-fructose corn syrup provides. So, now you can have your corn syrup, without the corn, the calories, and the sugar. Pretty sweet, right? In fact, I find this homemade version really opens up a lot of possibilities, for syrups, tarts, frostings, bars, fudge. The list is really endless.

Mock Corn Syrup

Chiefly, this recipe leverages the amazing properties of Allulose to get a beautifully rich texture, much like my sweetened condensed milk recipe. Allulose is very sensitive to browning so you do need to watch the heat so it doesn’t caramelize too much and becomes more candy-like and too thick to really work with. It should be a clear pale golden colour. The darker the colour the more caramelized it has become.

‘Low-Carb’ Golden Mock Corn Syrup

Most importantly, you have to use a wide bottom saucepan for this recipe. It’s an absolute must. That’s how it heats and reduces in that short period of time. Too much fluid height in the pot is a sure reason for the liquid not to reduce. I use my spatula to estimate the height of the liquid in the pot. It leaves a faint line over the silicone so after it’s simmered for the required time, I can see how much its reduced, and if it’s ready or needs a few more minutes.

Most importantly, after you add your ingredients, stir only to incorporate. Then, once it starts to boil, put the lid on for a minute so the moisture in the pot becomes trapped allowing any residual ingredients on the sides to the pot to fall down into the hot mix.

Using a wide bottom saucepan is a must for this recipe. That’s how it heats and reduces.

If you like, you can add vanilla and a wee bit of Lakanto Maple Flavored Sugar-Free Syrup it gives it a nice golden colour and also a rounder flavour. Once done, you don’t necessarily get a maple taste, just a deeper sweetness. However, this is optional. To be honest, I often don’t add this, mostly because if I don’t, I’ll have more flexibility with what I use it for later. Albeit, I do have some that I have made special batches, that I keep for when the moment suits. But Whether or not you add flavouring, your keto low-carb corn syrup will be delicious.

It’s important to realize, this Keto Golden Corn Syrup recipe will heat just like sugar would. So, you heat it to 230ºF to 240ºF to get to the softball in the candy making stage, as you would with sugar.

Eventually, you’ll feel the syrup develop more weight and body to it as it coats the spatula when you stir. It will also have a nice shine. You don’t want it to be super thick in the pot on the stove, in fact, it’s OK if it’s still a bit runny as it will thicken further as it cools. Specifically, the temperature, the shine, texture, and thickness of the syrup will tell you that it’s ready.

Last warning, when you make this, the liquid will get extremely hot. It can burn you, and if it will pretty much blister on contact. Obviously, this is not the recipe to make while nude. Just saying. Sometimes I just use nitrile food safe gloves when I can’t be bothered getting out the bigger gloves. They are better than nothing.

This will get extremely hot – wear heat resistant gloves

Sometimes I may even put on a cotton glove underneath and then the nitrile glove on top and that really does help but it doesn’t protect your arms if you don’t have long sleeves on. Now, I’m not sure how much feeling I have in the tips of my fingers and how many itty bitty burn scars I have over my hands and forearms but I really can’t tell you if I was wearing vinyl gloves or not gloves at all when I burned myself and if you’re like me, you get used to it.

However, if you are a smarter person than me, you may want to consider wearing a heat resistant dish glove to give your hands and forearms additional protection. Admittedly, this is a struggle for me as I have very small hands so find it pretty awkward using big gloves—the barbecue gloves that are totally heat resistant are impossible for me to wear as they are designed for hands five times the size of mine. The struggle is real.  

That said, if you simmer it on the stove and let it cool before you start pouring and working with it, than all of this is moot. Lastly, your Keto Golden Corn Syrup once done will last for while some time in a sealed container. It doesn’t need to go in the fridge. I like to make a batch ahead of time and use it for the month. 

Hope you enjoy this recipe as much as I do,

‘Low-Carb’ / Keto Golden Mock Corn Syrup
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This homemade sugar free Mock Corn Syrup all the taste and texture without the corn, the calories, and the sugar.

Prep Time: 5 minutes
Cook Time: 15 minutes
Total Time: 20 minutes
Course: Cocktails, Dessert, DIY, Main Course, Side Dish
Cuisine: American
Servings: 32
Calories: 0.4kcal



  • Add water, allulose, cream of tartar and salt to a large-based saucepan and stir to combine.
  • Once it starts to boil, out the lid on for a minute so the moisture in the pot becomes trapped allowing any residual ingredients on the sides to the pot to fall down into the hot mix.
  • Over medium heat, stir regularly with a heat resistant spatula and bring to a boil.
  • As soon as it boils turn to low to simmer for 15 to 20 minutes until it is reduced by about half, and the consistency becomes a thick syrup, coating the back of a spatula and is heavy when stirring.
  • This should be around 230ºF to 240ºF, the softball stage in candy making.
  • Allulose is very sensitive to browning so you do need to watch the heat so it doesn’t caramelize too much.
  • Once removed from heat, add flavourings if desired.
  • It should be a light yellow golden like colour. The darker the colour, the more caramelized it has become. No matter what colour yours becomes as it simmers, it will be delicious. Do not fret.
  • It’s ok if it’s still runny as it will thicken further as it cools.
  • If not using right away, cool and store in airtight jar.


Calories: 0.4kcal | Carbohydrates: 0.3g | Sodium: 0.6mg | Potassium: 3.9mg | Sugar: 0.3g | Calcium: 0.4mg | Net Carbs: 0g | Allulose: 0.3g


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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  1. ME says

    1 star

    I made this and made sure to get it up to the temp required to get it it the softball stage and when the “syrup” cooled, it was basically solid in the jar. I’d hope to use this to make pecan pie for Christmas, but that was the last of my allulose 🙁

  2. ME says

    5 stars

    great recipe – if you live at altitude – remember to adjust accordingly! for every 300 meters (approximately 1000 feet) above the sea level you should subtract the temperature of cooking for 1°C (2°F).

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