Why it works: Pepper and clove match in chemistry and in kitchens. They rank in the top 5% of all ingredient pairs, and cooks put them together in 17,451 recipes. Both carry ethyl octanoate, which smells fruity, wine. The science ↓
Tomato Mustard
Ingredients
Directions
Make the tomato base
Cut tomatoes into small pieces and boil until tender.
Rub the boiled tomatoes through a sieve to extract the pulp and boil until nearly dry.
Season and bottle
Add cayenne pepper, black pepper, ground cloves, mustard seed, and coarse sea salt.
Boil the mixture for a few moments, then let it cool.
If needed, add more salt before the final boil.
Bottle the mixture, pour sweet oil on top of each bottle before corking to exclude air, and cork it tightly.
Transcribed from a scanned cookbook and modernised for today's kitchens. Where the book gave no heat or time, or said "a moderate oven", the temperatures and times here may be modern equivalents rather than the book's own figures.
Explore the science
The flavor team
The pairs that carry this dish. Each one is judged two ways: how much their aromas overlap, and how often cooks already put them together.
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Pepper + clovetop 5% of all pairsSmell alikestrongCooked together17,451 recipes
Shared aroma: ethyl octanoate (fruity, wine).
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Tomato + peppertop 7% of all pairsSmell alikemoderateCooked together17,923 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
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Clove + mustardtop 8% of all pairsSmell alikestrongCooked together3,829 recipes
Shared aroma: methyleugenol (clove, spice).
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Pepper + mustardtop 9% of all pairsSmell alikemoderateCooked together15,430 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
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Tomato + mustardtop 11% of all pairsSmell alikemoderateCooked together2,482 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Tomatoes
- Form the bulk of the sauce and supply its body and flavor once reduced.
- Mustard seed
- Adds sharp, pungent flavor that sits under the tomato and spice notes.
- Coarse sea salt
- Seasons the sauce and helps preserve it during storage.
- Sweet oil
- Forms a layer over the surface that helps keep air away from the mixture.
The step that matters
Boil the pulp until nearly dry. Tomato pulp holds a lot of water. Reducing it concentrates flavor and thickens the mixture, and too much remaining moisture makes the bottled product more likely to spoil.
Swap the tomato
How well each one fits the dish's main ingredients (pepper, clove, mustard):
- Horseradishfits better
- Lettucefits better
- Shallotfits better
- Tomatothe original
Fit is the average pairing score against pepper, clove, mustard. Candidates are from the same food group and used in at least 100 recipes.
“What each ingredient does” and “The step that matters” were written by Claude from this recipe’s own method and reviewed in samples by CompKitchen.
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