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Ketchup vs Capsicum: shared flavor compounds

45 of 404 flavor compounds are shared (Jaccard 0.11) — the molecular basis for whether Ketchup and Capsicum pair well or work as substitutes. Full side-by-side breakdown below.

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

45
Shared
45
Ketchup reported
404
Capsicum reported
0.11
Jaccard
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 compounds held — Ketchup: 0, Capsicum: 137. The graph median is 12.

“Reported” counts reflect the compounds characterized for each ingredient across the studies and databases we aggregate — a measure of coverage, not an exhaustive census. Different analyses target different compound classes and methods, so read these as what has been characterized, not the total number of molecules present. Jaccard measures shared coverage, so it rewards overlap rather than highlighting the ratio differences that distinguish two ingredients.

Why they pair: shared-compound network

12 of 45 shared shown

Each molecule in the middle is shared by both ingredients — the chemistry bridging Ketchup and Capsicum. Node color is chemical class and node size is perceptual potency (bigger = lower odor threshold, so it drives aroma at smaller amounts); a copper ring marks compounds flagged as key aromas in published GC-O studies. Zoom with the +/− buttons or a pinch, drag the background to pan, drag a node to pin it, click any molecule for its full profile.

Showing the 12 highest-impact of 45 shared compounds (key aromas first). Sign in for the full network, including the compounds unique to each ingredient.

Where they differ: aroma character

Profile distance 0.55

The Jaccard above measures overlap; this compares each ingredient’s aroma-family mix side by side — the wider the gap between the two bars, the more that family sets the ingredients apart. Ketchup reads left, Capsicum reads right.

44.2%
Other
12.1%
34.9%
Sour
15.4%
2.3%
Fruity
15.1%
0.0%
Roasted
9.6%
0.0%
Green
7.4%
0.0%
Spicy
5.2%
0.0%
Woody
5.2%
7.0%
Floral
11.5%
0.0%
Caramel
3.6%
4.7%
Herbal
7.7%
Ketchup ◀ ▶ Capsicum

Shares are fractions of each ingredient’s labeled compounds (43 of 45 for Ketchup, 363 of 404 for Capsicum) — compositional lean, not concentration. Aroma labels come from our compound enrichment and cover most, but not all, characterized molecules.

Pro names the molecules behind each difference — the specific compounds in each aroma family that one ingredient has and the other doesn’t. Sign in to see them.

Published recipes using both

1 found

Real dishes from our 610K+ curated recipe corpus that combine ketchup and capsicum — proof the pairing works in practice.

Shared compounds

45 of 404 total

These are the molecules both ingredients have in common — the chemistry behind why they pair. Grouped by chemical class; ★ marks compounds flagged as key aromas in published GC-O studies. Click any molecule for its identifiers (CAS, formula, PubChem CID), odor data, and every ingredient it’s found in.

Most perceptually potent shared compounds

22 of 45 shared are aroma compounds with a measured threshold

Odor threshold is the concentration at which a molecule becomes smellable — lower = more potent. These clear their threshold most easily, so they drive the shared aroma out of proportion to the raw shared count.

Showing the 6 most potent of 22 with measured thresholds. Sign in for the full ranked list.

Showing the 5 highest-impact of 45 shared compounds (key aromas first) — sign in for the full list, grouped by chemical class with key-aroma markers.

See 0 ketchup-only and 360 capsicum-only compounds with Pro

Side-by-side ingredient comparison — including the unique compounds in each ingredient — is a Pro feature.

Try the pairing tools for full recipe-aware scoring, or explore ketchup's profile.

Cite this analysis
Plain text
Compound Kitchen (2026). Compound similarity analysis: Ketchup vs Capsicum. https://compkitchen.com/compare?a=ketchup&b=capsicum. Accessed 2026-09-28.
BibTeX
@misc{compkitchen_compare_compound_similarity_analysis_ketchup_vs_capsicum_2026,
  title  = {Compound similarity analysis: Ketchup vs Capsicum},
  author = {{Compound Kitchen}},
  year   = {2026},
  url    = {https://compkitchen.com/compare?a=ketchup&b=capsicum},
  note   = {Accessed: 2026-09-28}
}

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