Sugar-Free Fresh Tomato Ketchup

Sugar-Free Fresh Tomato KetchupDid you get any homegrown, ripe picked tomatoes this season?  We’ve been busy picking tomatoes from our garden this past week.  I’m so glad I took the time to convert most of our gorgeous tomatoes into homemade enchilada sauce, tomato puree, and this absolutely healthy, sugar-free fresh tomato ketchup.  After this great success, I’m ready for winter recipes. Are you?

Although planting your own tomatoes is more work than buying those flavorless mutants from stores, the truly intense tomato flavors make the work very rewarding. Like my father-in-law said: “they taste like tomatoes”.  Agreed!  

Sugar-Free Fresh Tomato Ketchup

I still remember those days when I lived in China, farmers would carry their freshly harvested tomatoes in baskets on their bicycles and go through the neighborhoods to sell them.  You could smell the ripe tomatoes just walking by the baskets.  Sadly, it is not the case for most store-bought tomatoes these days.  Harvesting too early or breeding them into a cosmetically appealing mutant is not going to make for a flavorful tomato.

Sugar-Free Fresh Tomato Ketchup

My husband, Brad, is the real hero behind our thriving and productive tomatoes plants.  He planted 4 different varieties: grape, cherry, beefsteak, and better boy.  The grape and cherry tomatoes ripened first.   Our cherry tomatoes are juicy and have stronger flavors than the grape ones.  However, the grape tomatoes have more tomato flesh and thinner skins which  make them a better choice for making ketchup.

Sugar-free Fresh Tomato Ketchup

Although homemade fresh tomato ketchup tastes different than the store-bought ones, it’s absolutely delicious and healthier.   

It is:

Naturally sweetened

Low in carbs

Low in calories

Bold tomato flavors

Sugar-free Fresh Tomato Ketchup

After cooking the tomatoes and boiling down the juice on the stove for about an hour, you can mash some chunky pieces with a masher.  There are many way to make the final ketchup.  Here are my suggestions:

Sugar-free Fresh Tomato Ketchup

The first method will remove all the tomato seeds and skin.  It will give your fresh tomato ketchup a deeper color.  The other two methods will blend the seeds and skin with the tomato puree.  You will get an orangish ketchup.  Personally, I like to keep the skin because it adds more fiber to our diet.  Nothing goes to waste.

 Sugar-free Fresh Tomato Ketchup

I made a large batch from 4½  pounds of garden tomatoes.  If you can’t finish it in a week, you can divide it into smaller containers and freeze them.  It’s really convenient to be able to pull some out of the freezer to use later.

Our 4-year-old son, Leo, loves to dip all kinds of finger food in ketchup.  After a taste test, he approved of this homemade healthy version.  I know he is eager to dip his broccoli, zucchini squash, vegan lentil burgers, and oven roasted tofu in it.

Sugar-free Fresh Tomato Ketchup

4 from 1 vote
Sugar-Free Fresh Tomato Ketchup
Prep Time
10 mins
Cook Time
1 hr 20 mins
Total Time
1 hr 30 mins

This sugar-free fresh tomato ketchup is made from a list of whole ingredients. Homegrown fresh garden ripe tomatoes add so much flavors to this healthy version of ketchup.

Course: Sauce/Condiment
Cuisine: Vegan | Gluten-free | Sugar-free
Keyword: Gluten-free, gluten-free vegan, healthy ketchup, homemade, ketchup, stevia, sugar free, tomato
Author: Joyce @Light Orange Bean
  • 9 oz diced onion white or yellow
  • 1 tablespoon canola oil
  • 5 cloves garlic minced
  • 4 cloves
  • pounds ripe tomatoes cut into big chunks
  • ½ cup distilled white vinegar
  • ¾ teaspoon salt
  • ¾ teaspoon stevia
  1. Heat a saucepan over medium heat until hot. Add oil and wait for 5-10 seconds until the oil is hot. Add diced onion, minced garlic. Saute for 1 minute until the onion is fragrant.
  2. Stir in tomatoes and cover the saucepan with lid. Cook over high heat until boiling. Remove cover and reduce heat to medium low. Add the remaining ingredients. Stir occasionally to prevent the tomatoes from burning on the bottom of the pan. Cook without cover for 1 hour 20 minutes.
  3. Let the cooked ketchup cool slightly. If you prefer to remove the tomato seeds and skin, pour it over a fine-mesh strainer or use Victorio food strainer to get the smooth ketchup. If you prefer to keep the seeds and skin in your ketchup, pour it into a Vitamix blender and blend until smooth.
  4. Divide the ketchup into small containers. They can be frozen up to 3 months or longer.


Sugar-Free Fresh Tomato Ketchup


  1. Naomi says:

    I made this with variations yesterday, it is delicious! I used a dash of ground cloves and ground nutmeg because I didn’t have whole. Apple cider vinegar and malt mix, again, all I had. Preference to not use sweetener of any kind, I don’t eat sugar very often so I guessed that tomatoes would be sweet enough for my family. This recipe is great and I will make it again. Thanks!
    Giving 4 stars because I didn’t try it as written.

    • Joyce says:

      That’s great, Naomi! I think using what you have in the kitchen and give the recipe a little spin is fun. So glad your modification of the recipe worked well.

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