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
Prepare the tomatoes
Cut the tomatoes into small pieces.
Boil the tomatoes until tender.
Pass the tomatoes through a sieve to extract the pulp.
Boil the pulp until nearly dry.
Season and bottle
Add the Cayenne pepper, black pepper, cloves, mustard seed, and coarse sea salt.
Boil the mixture for a few moments.
Let the mixture cool.
Bottle the mixture.
If needed, add more salt before the final boil.
Top each bottle with sweet oil.
Cork the bottles tightly to exclude air.
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).
-
Clove + mustardtop 8% of all pairsSmell alikestrongCooked together3,829 recipes
Shared aroma: methyleugenol (clove, spice).
-
Pepper + mustardtop 9% of all pairsSmell alikemoderateCooked together15,430 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
-
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
- Provide the bulk of the pulp, which is reduced to a thick base.
- Mustard seed
- Adds pungent, sharp flavour that deepens as the mixture is cooked.
- Cayenne pepper
- Adds heat to the sauce.
- Cloves
- Adds warm, aromatic spice flavour.
The step that matters
Boil the pulp until nearly dry. Reducing the pulp concentrates its flavour and removes excess water, so the mustard keeps its body and is less likely to spoil in the bottle. Stopping too early leaves a thin, watery product.
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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