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Sugar free Ketchup – Homemade Keto Ketchup

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4.89 from 246 votes
By Carine - - 33 Comments

This homemade sugar-free keto ketchup recipe is a delicious and easy keto recipe to enjoy some healthy tomato sauce with your fresh keto-friendly vegetables or on your keto tortillas.

Is ketchup keto-friendly?

Your typical ketchup, also known as Tomato Sauce in the Commonwealth, is not at all keto-friendly.

In fact, regular ketchup has about 20g of net carbs per 100g! So with just 100g, you would most likely have had your entire keto macros for a whole day!

ketchup nutrition label

And no, this is not solely because of the tomatoes. Store-bought ketchup is so high in carbs because it has added sugar. Check out the food label above. Sugar is the second ingredient!

Tomato is a low-carb vegetable with 2.6g of net carbs per 100g. So let’s see below how we can turn this low-carb vegetable into keto-friendly ketchup!

low calorie ketchup recipe

Making keto-friendly ketchup

You only need a few basic ingredients to make perfect, low-carb ketchup.

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  • Tomato puree, or fresh tomatoes.
  • Tomato Paste made with only tomatoes.
  • Onions for the taste. Yes, onions are also a low-carb vegetable. Not the lowest, but since we’re not using too many of them, it’s fine!
  • Erythritol to replace the sugar added in classic ketchup recipes. You could pick another keto-friendly sweetener. Make sure to read my sweetener guide to make the best choice!
  • Apple Cider Vinegar to add the typical bitter ketchup taste.
  • Garlic
  • Ground Paprika
  • Oregano
  • Extra Virgin Olive Oil 

sugar free ketchup natvia

I took my inspiration from Sugar-free Mom’s Ketchup recipe. Her sugar-free ketchup recipe is quite different as she is using honey, so it isn’t keto-friendly.

If you are not particularly low-carb and want to try honey in my recipe, I would recommend using 4 tablespoons of honey instead of the 2 tablespoons of erythritol and then adjusting to taste.

Carine from Sweetashoney

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By Carine from Sweetashoney

How to make sugar-free keto ketchup

Making the recipe is very easy. It only takes a few steps!

Prepare the low-carb vegetables

Chopped your onions and the garlic cloves into small bits.

Fry the onions in a saucepan with olive oil, and add the garlic and paprika.

Add the tomato paste

Once the onions are coated in paprika, add your tomato paste. Make sure it does not contain any added sugar!

Let it simmer for a couple of minutes, and then add the tomato puree, also known as tomato passata.

For a sweet taste, add a sugar-free sweetener like Erythritol. Let it simmer for a few more minutes over low heat.

Blend the ketchup

Once your sauce has thickened, use an immersion blender to turn it into smooth ketchup.

sugar free ketchup recipe

The color of the ketchup is slightly lighter than the store-bought version, but the taste is very similar. This is a very simple ketchup recipe that makes about 300g of ketchup.

Storing the homemade keto ketchup

This keto-friendly homemade ketchup dip can be stored safely in the fridge for one week. Store it in an airtight container to let it keep its taste and texture.

More Keto-friendly dips

If you enjoy dips on your keto diet, make sure to check the following recipe!

If you need the perfect appetizer for your low-carb ketchup, check these out!

healthy ketchup recipe

Have you made this ketchup recipe? Write a comment below or rate the recipe on the card!

xoxo Carine

Recipe Card

Sugar-Free Keto Ketchup

1.9gNet Carbs
4.89 from 246 votes
Prep Time: 5 mins
Cook Time: 10 mins
Total Time: 15 mins
Net Carbs 1.9g
Fat 0.7g
Protein 0.3g
Calories 17kcal
Author: Carine Claudepierre
20 portions
Sugar-free ketchup sweetened with stevia is low in carbs, diabetes-friendly and keto-friendly.

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Net Carbs
4.89 from 246 votes
Leave A Review Print The Recipe


  • ½ cup Tomato puree preferably organic
  • ½ cup Tomato Paste
  • 3 Onions finely chopped
  • 2 tablespoons Erythritol
  • 1-2 tablespoons Apple cider vinegar adjust to taste
  • 1 Garlic Clove finely chopped
  • ½ teaspoon Ground paprika
  • ½ teaspoon Dried oregano or fresh
  • 1 tablespoon Extra Virgin Olive Oil
  • Salt
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  • In a saucepan under medium heat, warm the olive oil.
  • Add the finely chopped onions, garlic, and paprika.
  • Fry until the onions get softer and well coated by the ground roasted paprika. It could take 3-4 minutes.
  • Reduce to low heat and stir in the tomato paste and apple cider vinegar. Simmer for 1-2 minutes while constantly stirring with a spoon or spatula.
  • Stir in the tomato puree, sugar-free crystal sweetener, and dried oregano.
  • Reduce to low heat and simmer for 2 more minutes until the liquid thickens.
  • Adjust with salt and pepper if desired.
  • Remove from heat and using an immersion mixer, blend until smooth.
  • Store in the fridge for up to 1 week in a glass mason jar or an airtight container.
Tried this recipe?Mention
Nutrition Facts
Sugar-Free Keto Ketchup
Amount Per Serving (20 portions)
Calories 17 Calories from Fat 6
% Daily Value*
Fat 0.7g1%
Carbohydrates 2.4g1%
Fiber 0.5g2%
Sugar 1.1g1%
Protein 0.3g1%
Net Carbs 1.9g
* Percent Daily Values are based on a 2000 calorie diet.

Keto ketchup recipe


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    33 thoughts on Sugar free Ketchup – Homemade Keto Ketchup
  1. I have type 2 diabetes, this sugar-free ketchup will make a difference in my blood sugar testing, Thank you.

    • I am glad you found my blog, all my recipes are diabetes friendly. Enjoy and take care, XOXO Carine

    • Sorry I updated the recipe, Natvia is the brand name of the sugar free crystal sweetener in New Zealand (where I live!). It is basically erythritol stevia blend known as Swerve in US. Enoy the sauce, XOXO Carine

  2. 5 stars
    I don’t know what brown onions are, so used 1 small yellow onion. For sweetener I used 1 1/2 TBSP xylitol. Love this recipe and how easy it is. My third attempt at finding a homemade ketchup recipe that was edible. This is definately a keeper. Thank you.

    • Brown onions are small onion slightly less strong than yellow onion. You can use any onion you like for this recipe. I am so glad you enjoy that ketchup. Have a great time trying my recipes and thank you SO much for the beautiful comment. XOXO Carine.

  3. 5 stars
    Sounds like a good sugar free recipe using stevia! I’ll be trying it very soon, as I have been winging it with my own recipes for a few months. THank you.

    • It is a nice simple ketchup recipe that me and my kids enjoy. I hope you will love it too. Thanks for reading the blog and trying my recipes. XOXO Carine.

    • Hello! I store mine for up to 3-4 weeks in the fridge in a glass mason jar. Enjoy the recipe ! XOXO Carine.

    • I never freeze my ketchup but I am sure it will work well. It is basically a tomato sauce ! Enjoy the sugar free recipes on the blog. XOXO Carine.

    • Hi,
      A portion of ketchup contains 1.9 net carb. This recipe serves 20 portions. The full nutrition panel is available after the recipe card. Enjoy the recipe. xoxo Carine.

  4. Hi, I’m in the Uk and not sure what the difference is between tomato puree and tomato paste we tend to call tomato puree (the concentrated kind usually bought in a tube) both puree and paste. Could passata be similar to one of them? I really want to make this but don’t want to add something I shouldn’t! 🙂

    • Hi Polly, The tomato puree in NZ is the same as passata. The tomato paste is a thick concentrated tomato mixture that you can buy in tube or small pot. A mix of passata and tomato puree in tube will make the recipe perfect! Let me know how it goes! My family loves this clean food ketchup recipe ! Thanks for reading the blog and testing my recipe ! xoxo Carine.

    • Hi Neha, I would love to give you a perfect answer but as I did not use fresh tomatoes I have got no idea of how many tomatoes you need to make the tomato puree. I always use organic canned tomato puree and tomato paste. It is super fast and no nasties added. Enjoy the recipe ! Carine.

    • Hi Claire! I am glad you love this sugar free ketchup recipe. This is such a great way to enjoy a guilt free tomato sauce right? I hope you find even more healthy recipes on the blog. Carine.

  5. I notice that in your sugar free ketchup, the recipe says oregano, but in your photos you have rosemary – can you use either according to taste or is one better than the other? Looking forward to trying this!

    • Hi Tosh, Good spotting! You are right I love adding a bit of rosemary in my ketchup recipe sometimes. The recipe I shared is the one I do regularly but I love to alter this recipe each time now by adding different spices. Lately I added a bit of smoked paprika to make a smoked ketchup, it taste almost like BBQ sauce and I love it. I recommend you to follow the basic recipe first and then, be creative and add some of your favorite herbs and spices to make it your own fav ketchup! Enjoy. Carine.

  6. Just finished making a batch this was amazing Love Love Love the taste. I did put it in my blender for a few seconds to thin it out a little. Thank you for sharing

    • Hi Debbie, I am so glad you love it ! Good idea to blend the ketchup to make it smoother 🙂 I also do my own BBQ sauce now it is so much healthier when homemade! See you soon on the blog. Carine.


The recipes, instructions, and articles on this website should not be taken or used as medical advice. You must consult with your doctor before starting on a keto or low-carb diet. The nutritional data provided on Sweetashoney is to be used as indicative only. The nutrition data is calculated using WP Recipe Maker. Net Carbs is calculated by removing the fiber and some sweeteners from the total Carbohydrates. As an example, a recipe with 10 grams of Carbs per 100 grams that contains 3 grams of erythritol and 5 grams of fiber will have a net carbs content of 2 grams. Some sweeteners are excluded because they are not metabolized. You should always calculate the nutritional data yourself instead of relying on Sweetashoney's data. Sweetashoney and its recipes and articles are not intended to cure, prevent, diagnose, or treat any disease. Sweetashoney cannot be liable for adverse reactions or any other outcome resulting from the use of recipes or advice found on the Website.

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