Tomato Paste Substitutes: Matching Concentration and Sweetness
Tomato paste is intensely reduced and concentrated — swapping it for sauce, ketchup, or sun-dried tomato paste means adjusting both the ratio and the sweetness balance.
Tomato paste is tomatoes cooked down and reduced until most of the water evaporates, concentrating both the sugars and the umami-rich glutamates roughly six to eight times compared to fresh tomatoes. That concentration is exactly what makes it so useful — a spoonful adds deep tomato flavor and body to a sauce without adding much liquid, which is why recipes often call for it specifically rather than just more tomato sauce. Any substitute needs to account for that concentration difference, or you'll either water down the dish or oversweeten it, since many convenient substitutes like ketchup carry a lot of added sugar tomato paste doesn't have. Getting the ratio right matters more here than with most substitutions, because tomato paste is usually a small quantity doing a disproportionately large amount of flavor work.
Best Overall Substitute: Reduced Tomato Sauce or Passata
Simmer 3 tablespoons of tomato sauce or passata down over medium heat, stirring frequently, until it reduces to about 1 tablespoon — roughly a 3:1 reduction — to match tomato paste's concentration. This takes about 10-15 minutes but gives the closest flavor and texture match since it's just further-concentrated tomato, with no added sugar or other flavors to balance out.
💡 Tip: Reduce it in a wide, shallow pan rather than a deep pot — more surface area speeds up evaporation significantly.
Ketchup (Emergency Swap Only, Sweeter and Thinner)
In a genuine pinch, use ketchup in place of tomato paste at roughly a 1:1 to 2:1 ratio depending on how thick your ketchup is, but reduce or omit any added sugar elsewhere in the recipe, since ketchup already contains a meaningful amount (roughly 4g of sugar per tablespoon versus tomato paste's negligible sugar). It's also thinner and more vinegary, so a dish made with ketchup instead of paste will taste sweeter and tangier than intended, and won't add the same body.
Sun-Dried Tomato Paste (Best Umami-Forward Swap)
Substitute sun-dried tomato paste 1:1 for regular tomato paste when you want a deeper, more intensely savory, slightly sweeter flavor — it works particularly well in braises, stews, and pasta sauces where that extra umami complexity is welcome. It's noticeably more concentrated in flavor than regular tomato paste, so start with slightly less and taste before adding the full amount if the dish is delicate.
Tomato Powder (Best for Dry Rubs and Precise Dosing)
Mix 1 tablespoon of tomato powder with 1 tablespoon of water to approximate 1 tablespoon of tomato paste. Tomato powder — dehydrated, ground tomatoes — is shelf-stable for a long time and useful to keep on hand for exactly this purpose, or used dry in spice rubs and dry marinades where you want concentrated tomato flavor without any added liquid at all.
Fresh Tomatoes, Cooked Down (Best When You Have an Abundance)
Peel, seed, and roughly chop about 2 cups of fresh ripe tomatoes, then simmer uncovered over low heat, stirring occasionally, until reduced to a thick paste — this can take 45 minutes to an hour and yields only a few tablespoons, so it's a labor-intensive option best used when you have surplus fresh tomatoes rather than as a quick fix.
What NOT to Do
Don't substitute plain canned diced or crushed tomatoes 1:1 for tomato paste without reducing them first — the extra water will thin out a sauce that's relying on paste for both flavor concentration and body, and the dish will taste watery and underseasoned. And don't forget to adjust sugar and salt when substituting ketchup, since its added sugar and vinegar will noticeably shift the dish's flavor balance if the recipe isn't adjusted.
Frequently Asked Questions
Can I use ketchup instead of tomato paste?
Only as an emergency substitute — ketchup is thinner and contains added sugar and vinegar that tomato paste doesn't have, so the dish will taste sweeter and tangier than intended. Use roughly 1:1 to 2:1 depending on thickness, and reduce any other added sugar in the recipe to compensate.
How do I make tomato paste from tomato sauce?
Simmer tomato sauce or passata over medium heat in a wide, shallow pan, stirring occasionally, until it reduces to roughly a third of its original volume — about 10-15 minutes for 3 tablespoons of sauce to become 1 tablespoon of paste-equivalent.
What is a good substitute for tomato paste in chili?
Reduced tomato sauce or passata works best since chili typically needs both flavor concentration and thickness. Sun-dried tomato paste is also a strong option if you want extra depth and don't mind a slightly sweeter, more intense tomato flavor coming through.
Can I skip tomato paste entirely in a recipe?
You can, but the dish will lose depth, richness, and some thickness, since tomato paste's concentrated umami is doing real flavor-building work, not just adding color. If skipping it, consider adding a small amount of another umami source like miso or Worcestershire sauce to partially compensate.
Reduced tomato sauce or passata is the most faithful tomato paste substitute since it's just more concentrated tomato with nothing added. Ketchup works only as a last resort and needs the recipe's sugar rebalanced. Sun-dried tomato paste and tomato powder are worth keeping stocked as flavorful, shelf-stable backups for whenever regular paste runs out.
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