Homemade Sugar-Free Ketchup
- Ready in 15m
- 0.9 g net carbs
- 5 kcal
- Serves 28
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Making healthy sugar-free ketchup is easy! This recipe is also featured in our KetoDiet App and my first book! It takes just a few minutes to prepare and tastes so much better than any store-bought ketchup. Depending on the ingredients you use, it will only take 5 minutes (with garlic and onion powder) or up to 15 minutes (if you use fresh garlic and onion).
This tasty low-carb ketchup goes well with Low-Carb "French Fries" made with rutabaga instead of starchy potatoes. And if you can find parsley roots, it's definitely worth making these Parsley Root Fries!
If you're still not sure if it's worth making your own ketchup, here is a list of ingredients found in one of the most popular ketchup products (Heinz):
Tomato concentrate from red ripe tomatoes, distilled vinegar, high fructose corn syrup (the worst type of sweetener!), corn syrup, salt, spice, onion powder, natural flavouring (you can never be sure what this ingredient stands for).
Step-by-step
Peel and cut the onion and garlic in smaller pieces. Have all the other ingredients on hand ready to be used.

Place everything in a small sauce pan and simmer over low heat for 5-10 minutes. Add a dash of water if it's too thick.

Place everything in a blender or use an immersion blender and pulse until smooth.
Note: If you're using garlic powder and onion powder (or granules), you can skip the blending altogether. You will only need to heat it up and cook for a minute to let the sweetener dissolve.
Done! Pour in a glass jar and keep in the fridge up to a month or preserve for longer (water-bath canning works best). Try with Low-Carb French Fries made with rutabaga or Parsley Root Fries.


Recipe
Homemade Sugar-Free Ketchup
★★★★★4.8The easiest sugar-free and low-carb ketchup in just 5 minutes! A tasty keto-friendly condiment made at home ...
- Hands on
- 15m
- Overall
- 15m
- Servings
- 28
- 0.9 g
- Net carbs
- 0.2 g
- Protein
- 0 g
- Fat
- 5
- kcal
Ingredients makes about 1 1/2 cups
Instructions
Peel and cut the onion and garlic in smaller pieces. Have all the other ingredients on hand ready to be used.
Place everything in a small sauce pan and simmer over low heat for 5-10 minutes. Add a dash of water if it's too thick.
Place everything in a blender or use an immersion blender and pulse until smooth.
Note: If you're using garlic powder and onion powder (or granules), you can skip the blending altogether. You will only need to heat it up and cook for a minute to let the sweetener dissolve.Done! Pour in a glass jar and keep in the fridge up to a month or preserve for longer (water-bath canning works best). Try with Low-Carb French Fries made with rutabaga or Parsley Root Fries.
Nutrition per 1 tbsp/ 15 ml
Carbs 79%Protein 16%Fat 5% of calories
- Net carbs
- 0.9 g
- Total carbs
- 1.8 g
- Fiber
- 0.2 g
- Sugars
- 0.6 g
- Protein
- 0.2 g
- Fat
- 0 g
- Saturated fat
- 0 g
- Calories
- 5 kcal
- Sodium
- 86 mg · 3.73% RDA
- Magnesium
- 2 mg · 0.6% RDA
- Potassium
- 44 mg · 2.18% EMR
Nutrition by ingredient
| Per 1 tbsp/ 15 ml | Net carbs | Protein | Fat | kcal |
|---|---|---|---|---|
| Tomato purée (paste, unsweetened) | 0.6 g | 0.1 g | 0 g | 3 |
| Apple cider vinegar | 0 g | 0 g | 0 g | 0 |
| Onion, brown (yellow), raw | 0.1 g | 0 g | 0 g | 1 |
| Garlic, fresh | 0.1 g | 0 g | 0 g | 0 |
| Allspice, dried, spices | 0 g | 0 g | 0 g | 0 |
| Cloves, spices | 0 g | 0 g | 0 g | 0 |
| Erythritol (natural low-carb sweetener) | 0 g | 0 g | 0 g | 0 |
| Salt, sea salt | 0 g | 0 g | 0 g | 0 |
| Pepper, black, spices | 0 g | 0 g | 0 g | 0 |
| Water, still | 0 g | 0 g | 0 g | 0 |
| Total | 0.9 g | 0.2 g | 0 g | 5 |
Serving size 1 tbsp/ 15 ml
- Gluten free
- Dairy free
- Egg free
- Nut free
- Pork free
- Avocado free
- Coconut free
- Fish free
- Shellfish free
- Beef free
- Pescatarian
- Vegetarian
- Vegan
Serve it with
Dishes that go well with a condiment.
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Comments & ratings (58)
Hi, can a jar of tomato Passata be used for the tomato paste.
Thank You
You could use it but you will need to cook it for longer to reduce it. Tomato paste is thick but pasta is almost like thicker tomato juice.
This is the best ketchup I’ve ever had the pleasure of tasting. Truly exceptional. Thank you so much! I cannot wait to try more of your recipes, as this was my first one.
Thank you Safi! ❤️
How long does it last thanks
I keep mine for up to a month.
Thanks for sharing the secret recipe with us. The tomato ketchup recipe looks thick and flavorful with those lovely ingredients. It sounds wonderful. It would be helpful for everybody, who would like to cook tomato ketchup recipe. As usual, the pictures look stunning.
Thanks a lot Anders! I love simple recipes so much 😀
How long does this last? Can it be made ahead?
Thank you Lily! I keep mine sealed in the fridge for up to a month.
This ketchup is a HUGE hit in our house. My extremely picky ketchup-loving 4 year old absolutely loves this stuff and I couldn’t be happier about cutting out all that extra sugar. Thanks so much for a gold-star recipe!
Thank you so much Andi, I'm so happy to hear that! ❤️
Made this today - yummo! Thanks for sharing ☺
I gave up eating ketchup a few years ago, when I went lo-carb. However, I am trying to encourage my husband to reduce his carb intake so I made a batch of this ketchup. It was absolutely delicious. I then used it to make your BBQ sauce and that was amazing! Big thanks to you for all of your wonderful recipes!
Thank you for your kind words, I'm glad you enjoyed both of them! 😊
How many calories does the healthy homemade ketchup have? I made it and it’s amazing
Hi Kim, "calories" are listed as kcal.
Tomatoe puree or paste
I suppose "paste" - it is the concentrated, thick paste. Where I live we use these interchangeably 😊
Mine came out to sweet. But it tasted really good with sweet potato fries. I will make this again, thank you!!!!!
I think that may happen with some types of tomatoes - some are sweeter than others so I'd skip the sweetener or use it "to taste" 😊
Can this be frozen?
I haven't thought of that but I think you can freeze it in an ice cube tray. I do that with my BBQ sauce and Thai curry paste.
Is it ok to lwave the sweeteners out? I have PCOS nad just can't use any...
Absolutely! Sweeteners are always optional in recipes like these - it depends on your palate.
Hi there,
Any substitutes for spices below;
⅛ tsp ground allspice
⅛ tsp ground cloves
Is it ok if i skip both of it?
Thks
Hi Philip, I think you can skip these - there won't be any substitutions for these.
This worked really well! I made one batch as a test and then three more the next night... great recipe; thank you!
I a long-time lover of Heinz, hater of Hunts, 365, and all other grocery ketchups. I have been guiltily eating Heinz out of the fridge, even though we went keto 3 months ago. I made this recipe for a keto meatloaf, and after I tasted it, I poured all my Heinz down the sink. I'd rather have the Heinz bottle for my winter sowing in the garden than the ketchup that was in it. That's how much I love this recipe. Thanks!
P.S. This went extra fast for me because I didn't simmer and I didn't immersion blend--I just pressed the onion and garlic through my garlic crusher and added in a can of tomato paste for thickness. So good!
Thank you Elle, it's good to know! 😊
For how long does this stay good in the refrigerator?
I usually use mine in just a few weeks or a couple of months. If sealed properly, it should last for up to 6 months.
Hi, I just made this recipe and it tastes great!! Now I won't miss store-bought ketchup! This recipe was very easy to follow and I already had everything on hand. Thank you for posting it!
Thank you Evelyne!
Thank you for posting this recipe. My family loves it. I am making a double batch today. My husband says it gets better tasting every day as it mellows. YUM!
Thank you Cathy!
Best. Ketchup. Ever. I've been low carb for three years, but I've been missing my favourite condiment. No more!! So so good.
Thank you so much!!
Hi Martina,
Do you know any brand of tomato puree that can be bought in UK with a similar carb content to the one you linked?
I have today bought a Biona Tomato Puree, but unfortunately the label says it has around 14grams of carbs, even though it says only 7.1 grams on their website...
As long as it's only made with tomatoes and with no added sugar, you should be fine 😊