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This easy homemade ketchup is keto, low carb, and sugar free! The best part: it tastes just like “regular” ketchup and is quick to make. Perfect with cauliflower, keto chicken fingers, rutabaga fries or anything else that needs plenty of dipping!

Keto ketchup surrounded by fries

What Makes This Recipe So Good

  • This low carb, keto ketchup recipe makes it easy to work your favorite condiment into your meal without upsetting your blood sugar. Traditional ketchup may not seem like a big deal – you usually only use a little at a time, right? But if you’ve ever looked at the label then you know it’s full of added sugar, and that “little at a time” can easily be more than you realize. Whatever your reason for watching your sugar intake, you won’t have to worry with this homemade version.
  • It tastes just like traditional, store-bought ketchup – you’d never even know it was keto! The difference maker, in my opinion, is the brown “sugar”. It adds a little extra something and really puts this ketchup over the top!
  • This recipe only takes a handful of ingredients, and you can adjust them as you need to get a ketchup that’s perfect for your tastes. Like your ketchup a little sweeter? Add a little more brown “sugar”. Really love paprika? Go ahead and double up!

Key Ingredients

Brown “Sugar” – Ketchup is a little tangy and a little sweet, so obviously we need some sort of sweetener in our keto ketchup. Brown “sugar” gives it a deep, rich flavor that mimics the traditional store-bought versions. Any keto-friendly sweetener you like will work, so if you don’t have or can’t find a sugar-free brown sugar, you can use any non-sugar sweetener in its place.

Tomato Paste – The base of this keto ketchup is tomato paste, and yes, it’s true that most canned tomato products aren’t keto-friendly. Like traditional ketchup, canned tomato products usually contain a lot of added sugars, or sugar substitutes that can knock you out of ketosis. The key is to use a tomato paste that has the lowest number of carbs and sugars possible. You also want to avoid any that have added sugars or sugar substitutes. Any sugar in the paste should come from the tomatoes, nothing else. This recipe yields approximately 18 servings, so the amount of sugar you’ll actually consume in a serving of keto ketchup is very low – and significantly lower than a serving of store-bought ketchup.

Chef’s Tips

  • Since there’s no preservatives in homemade keto ketchup, you can’t store it at room temperature. You just can’t. Refrigerate it in an airtight container, and it’ll keep up to 10 days. You can even freeze it if you need to!
  • Since you’re boiling and simmering, you shouldn’t run into this, BUT! If you find that your sugar substitute leaves a sort-of gritty texture, then next time you make ketchup, run the sweetener through a food processor or coffee grinder first to turn the granulated sweetener into a powdered sweetener.
  • Don’t rush the process. The longer your keto ketchup simmers, the thicker it gets, but the flavors also get deeper, too.
  • If you prefer a ketchup that’s less sweet, start out with just 2 tablespoons of sugar-free brown sugar, instead of 4. You can always taste and add more if needed, but you can’t take it back out!
Fry dipped into keto ketchup in a small bowl

Other Keto Recipes You’ll Love

Recipe By: Cheryl Malik
5 from 1 vote

Keto Ketchup

Prep 10 minutes
Cook 30 minutes
Total 40 minutes
This easy homemade ketchup is keto, low carb, and sugar free! The best part: it tastes just like "regular" ketchup and is quick to make. Perfect with cauliflower, keto chicken fingers, rutabaga fries or anything else that needs plenty of dipping!


  • medium saucepan
  • whisk



  • Add all ingredients to medium saucepan and whisk to combine.
    Ingredients for keto ketchup in a medium saucepan
  • Bring mixture to boil, then reduce heat to medium-low. Simmer 15 to 20 minutes, until ketchup thickens. If ketchup is too thin after 20 minutes, cook 5 to 10 minutes more.
  • Taste and adjust seasoning as desired.
  • Let ketchup cool completely, then transfer to airtight container and refrigerate.
  • Tomato Paste: Use the tomato paste with the lowest carbs and sugar count you can find. Be sure to check the ingredients section of the label – avoid any that have added sugar, or sugar substitutes that aren’t keto-friendly.
  • Sweetener: Sugar-free brown sugar is highly encouraged, but any keto-friendly sweetener will work.
  • Storage: Since this ketchup doesn’t have any preservatives, it should not be stored at room temperature. Make sure to refrigerate it in an airtight container, and it’ll keep up to 10 days.
  • Make it Gluten Free: Be sure your tomato paste and sugar substitute are gluten free. 

Approximate Information for One Serving

Serving Size: 1servingCalories: 8calProtein: 1gFat: 1gSaturated Fat: 1gCholesterol: 1mgSodium: 136mgPotassium: 102mgTotal Carbs: 5gFiber: 1gSugar: 1gErythritol: 3gNet Carbs: 1gVitamin A: 27IUVitamin C: 1mgCalcium: 1mgIron: 1mg
Nutrition Disclaimers
Number of total servings shown is approximate. Actual number of servings will depend on your preferred portion sizes.
Nutritional values shown are general guidelines and reflect information for 1 serving using the ingredients listed, not including any optional ingredients. Actual macros may vary slightly depending on specific brands and types of ingredients used.
To determine the weight of one serving, prepare the recipe as instructed. Weigh the finished recipe, then divide the weight of the finished recipe (not including the weight of the container the food is in) by the desired number of servings. Result will be the weight of one serving.

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