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Pairing

Tomato + Ketchup

A good pairing. Cooks put them together in 754 recipes, and they share 45 flavor molecules: the top 22% of all ingredient pairs. We hold little distinguishing chemistry for one of them, so the recipe count carries this verdict.

Smell alikelow
Cooked together754 recipes
Ranktop 22% of pairs
Try them in the pairing tool Tomato Ketchup
465tomato only 45shared Tomato · 510 Ketchup · 45
Circle size = number of flavor molecules on record. Overlap = molecules they share.
Thin evidence for this pair. We hold no distinguishing chemistry for ketchup: every compound on it appears in more than 10% of ingredients, so this score is computed over the background every food shares. Distinguishing molecules on record: Tomato 239, Ketchup 0 (the typical ingredient has 12).

Do tomato and ketchup go together?

Yes. 754 recipes in our collection combine them, and they share 45 flavor molecules. That places them in the top 22% of every ingredient pair we score.

Read this with the evidence note above in mind.

Why they work

Almost everything ketchup carries, tomato has too: 45 of ketchup's 45 flavor molecules also occur in tomato. Among the shared key aromas are ethanol (alcoholic, ethereal) and decanoic acid (soapy, waxy). Most of what they share is background chemistry many foods carry, so the overlap does little for the smell.

What each one brings

tomato

The fresh, green side. Green notes make up 14% of its labelled aroma molecules, against 0% for ketchup. It carries 465 molecules ketchup doesn't have.

ketchup

The tartness. Sour notes make up 35% of its labelled aroma molecules, against 14% for tomato. Every molecule it carries is also in tomato.

Add a third ingredient

  • Sauce: the best fit for both, top 15% of pairs with tomato, top 1% with ketchup.
  • Whiting: top 23% of pairs with tomato, top 1% with ketchup.
  • Haddock: top 25% of pairs with tomato, top 1% with ketchup.
  • Atlantic halibut: top 26% of pairs with tomato, top 1% with ketchup.

Ranked by the average of its two pairing scores. Only foods used in at least 100 recipes are suggested.

Recipes with tomato and ketchup

We have no browsable recipe that lists both tomato and ketchup.

Can you swap one for the other?

Only partly. Almost all of ketchup's flavor molecules (45 of 45) are also found in tomato, but tomato has 465 that ketchup lacks. Ketchup gives you part of tomato's character without most of its fresh, green side. This compares flavor only; texture, moisture and the job each does in a dish matter too.

All 45 shared molecules

See every shared molecule grouped by chemical class, with key aromas marked, plus the 465 only in tomato and the 0 only in ketchup.

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Tomato and ketchup questions

Do tomato and ketchup go together?

A good pairing. Cooks put them together in 754 recipes, and they share 45 flavor molecules: the top 22% of all ingredient pairs. We hold little distinguishing chemistry for one of them, so the recipe count carries this verdict.

Why do tomato and ketchup taste good together?

Almost everything ketchup carries, tomato has too: 45 of ketchup's 45 flavor molecules also occur in tomato. Among the shared key aromas are ethanol (alcoholic, ethereal) and decanoic acid (soapy, waxy). Most of what they share is background chemistry many foods carry, so the overlap does little for the smell.

What goes with tomato and ketchup?

Sauce is the best third ingredient: top 15% of pairs with tomato and top 1% with ketchup. Whiting and haddock also fit both.

Can I use ketchup instead of tomato?

Only partly. Almost all of ketchup's flavor molecules (45 of 45) are also found in tomato, but tomato has 465 that ketchup lacks. Ketchup gives you part of tomato's character without most of its fresh, green side. This compares flavor only; texture, moisture and the job each does in a dish matter too.

Compare other ingredients

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2

Two ingredients gives the full side-by-side breakdown; add a third to see a similarity matrix across all of them (up to 6).

Ranks compare this pair with 20,000 random ingredient pairs on CompKitchen. Molecule counts are what the studies and databases we aggregate have reported for each ingredient: a measure of coverage, not a full census. How we score pairs

Cite this analysis
Plain text
Compound Kitchen (2026). Compound similarity analysis: Tomato vs Ketchup. https://compkitchen.com/compare/tomato-vs-ketchup. Accessed 2026-11-04.
BibTeX
@misc{compkitchen_compare_compound_similarity_analysis_tomato_vs_ketchup_2026,
  title  = {Compound similarity analysis: Tomato vs Ketchup},
  author = {{Compound Kitchen}},
  year   = {2026},
  url    = {https://compkitchen.com/compare/tomato-vs-ketchup},
  note   = {Accessed: 2026-11-04}
}

Methodology DOI: 10.5281/zenodo.19719459 · CC BY 4.0 · Citations are a request, not a requirement.