Homemade Ketchup

  4.7 – 147 reviews  • Sauces

All you need to make these crunchy polenta fries is pre-made polenta, Cajun seasoning, olive oil, and a little salt. They taste fantastic warm out of the oven, but they also taste great cold. Because they contain fewer carbohydrates than potato-based fries, polenta fries are a healthier option. Serve alongside a basic aioli, ketchup, or other preferred dipping sauce.

Prep Time: 10 mins
Cook Time: 12 hrs
Total Time: 12 hrs 10 mins
Servings: 48
Yield: 3 cups

Ingredients

  1. 2 (28 ounce) cans crushed tomatoes
  2. ½ cup water, divided
  3. ⅔ cup white sugar
  4. ¾ cup distilled white vinegar
  5. 1 teaspoon onion powder
  6. ½ teaspoon garlic powder
  7. 1 ¾ teaspoons salt
  8. ⅛ teaspoon celery salt
  9. ⅛ teaspoon mustard powder
  10. ¼ teaspoon finely ground black pepper
  11. 1 whole clove

Instructions

  1. Pour tomatoes into slow cooker. Swirl 1/4 cup water in each emptied can and pour into the slow cooker. Add sugar, vinegar, onion powder, garlic powder, salt, celery salt, mustard powder, black pepper, cayenne pepper, and whole clove; whisk to combine.
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  3. Cook on High, uncovered, until mixture is reduced by half and very thick, 10 to 12 hours. Stir every hour or so.
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  5. Use an immersion blender for about 20 seconds to smooth the texture of the ketchup.
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  7. Ladle ketchup into a fine strainer and press mixture with the back of a ladle to strain out any skins and seeds.
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  9. Transfer strained ketchup to a bowl. Cool completely.
  10. Taste and adjust salt, black pepper, and cayenne pepper as desired.
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Reviews

Danielle Villegas
I love this recipe. I’ve made ketchup in the past and I’ve never really liked it, and neither has my very ketchup picky family. But this recipe is VERY good. My family loves it too and reminds me when we’re running low to start making more lol. It’s extremely simple, and doesn’t take any effort to do with the slow cooker. I no longer buy store bought, as we all like this one a lot better than regular Heintz ketchup. Great recipe!
Daniel Reynolds
I substituted apple cider vinegar for white and a dab of prepared mustard for dry because I didn’t have either. Also cut down on sugar as our tomatoes were very sweet. Everyone who has tried it loved it. Thank you! Making a “spicy” version right now.
David Smith
Totally Crazy! Made this twice now and bottled in water bath canning and will make it AGAIN! Everyone loves it. The only thing I changed was using a little less sugar and made a triple batch.
Mallory Price
Very good taste, too much sugar. I usedmy homegrown tomatoes and had about a quart of it, so more than in the recipe. I put half a cup of sugar plus half a cup of vinegar, so less than what is recommended in the recipe on more tomatoes. The rest of the ingredients were as in the recipe. I cooked it on the stove. It yield less than 3 cups of ketchup. Even with less sugar then recommended it is still super sweet. My kids love it, off course. There is a chance my tomatoes were very sweet to begin with, so next time I will add sugar to taste near the end of cooking. Besides this the taste is excellent and I am making it again.
Manuel Mendoza
Excellent, made extra and am going to use that as a base for my run at making bbq sauce.
Madison Frederick
The recipe has great bones… I used about 56 ounces of pureed fresh San Marzano tomatoes. I also made this on the stove top… my only other change was I used ground cloves. Since I do not eat ketchup, I made my husband taste it, from start to finish. He even said he would eat the initial warmed tomato ‘soup’. It was that good, according to him… I did reluctantly try the end product, and it wasn’t bad. This made 3 cups of ketchup, and I canned it, in three 8 ounce jars, and water bathed it. I will be making this again.
Mr. Daniel Morris
I made some Ketchup recipes before, but didn’t care for them. Needed some and was out, so searched and found this recipe to try. Glad I did. It’s a “keeper” and will be making it again! Thanks for sharing!
Deborah Cross
This is my first attempt at homemade ketchup. I’m looking forward to the final results. The ingredients list does not include the *CAYENNE PEPPER* I substituted a pinch of crushed red chili flake
Javier Oneal
I added Tumeric and granulated garlic in place of garlic powder
Alyssa Hernandez
Highly unrealistic to stir every hour, especially when ideally is should be made overnight. However, quite tasty but brats little resemblance to REAL tomato ketchup we know.
Dr. Richard Wood
Good recipe but a lot of work to avoid high fructose corn syrup which SCIENTIFICALLY has the same effect on the body as white sugar which is used in this recipe. When comparing equal doses of high-fructose corn syrup and regular sugar, research shows that there’s no difference in feelings of fullness, insulin response, leptin levels, or effects on body weight. Both are bad in excess.
Elizabeth Cervantes
No changes on my first time. I’ll try with Monk fruit next time!
Guy Adams
It’s very good
Christian Hatfield
turned out really great!
Nicole Casey
I made it as is and thought it was a little on the vinegary side. I will cut down on it the next tine I make it.
Christopher Bailey
Very good… the every hour stirring was a little inconvenient… but worth it.
Brandy Rhodes
I made this and basically created tomato juice. I even reduced it down to less than a quarter the starting volume(double the time recommended) and it still wasn’t thick at all.
Francisco Soto
I used fresh tomatoes from my garden, put through my squeezo, fresh onion and garlic which I pureed in my bullet, ground cloves. I cut down on the salt because of diet restrictions in the family. After almost 24 hours in the crockpot I used a table spoon of cornstarch in some cold water to thicken it and pronounced it ketchup. Very good flavor.
Kevin Adams
Just wanted to note, if you are using tomatoes from the garden, water need not be added – it just takes longer to evaporate. Also, depending on the tomatoes, you do not need much sugar, if any at all. Good recipe, I used it as a guideline substituting garlic and onion powders for real veggies. Being very conservative on the ingredients (1/4 cup of sugar) while making 5x the amount.
Jose Howard
I loved this recipe! I cooked on the stove top with an automatic stirrer for 3.5 hours. Produced five half pint jars. Water bathed for twenty minutes and stored away.❤️❤️ I will reduce the amount of sugar next time because I found that as the ketchup cooks down and condensed it became much sweeter.
Travis Bass
Way to much sugar….cut in half… Or less then add as to taste.

 

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