Why it works: Clove and pepper match in chemistry and in kitchens. They rank in the top 5% of all ingredient pairs, and 17,451 recipes mention both. Both carry ethyl octanoate, which smells fruity, wine. The science ↓
Tomato Sauce
Ingredients
Directions
Start the sauce
Cook the tomatoes with the onion and cloves for 10 minutes.
Make the roux
In a small frying pan, heat the butter and add the flour.
Stir over the heat until smooth and brown.
Finish the sauce
Stir the butter and flour mixture into the tomatoes.
Season with salt and pepper.
Strain the sauce to remove seeds.
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 aroma chemistry they share, and how many recipes mention both.
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Clove + peppertop 5% of all pairsAroma overlapstrongMentioned together17,451 recipes
Shared aroma: ethyl octanoate (fruity, wine).
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Tomato + peppertop 7% of all pairsAroma overlapmoderateMentioned together17,923 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
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Tomato + oniontop 8% of all pairsAroma overlapmoderateMentioned together20,633 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
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Onion + peppertop 11% of all pairsAroma overlapmoderateMentioned together68,474 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
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Tomato + clovetop 12% of all pairsAroma overlapmoderateMentioned together3,474 recipes
Shared aroma: ethyl caproate (fruity, apple peel).
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Tomatoes
- Form the liquid base and main body of the sauce.
- Butter
- Adds richness and carries flavor, and browns to deepen taste in the roux.
- Flour
- Thickens the sauce as its starch swells in the hot liquid.
- Onion
- Adds savory aroma and a mild sweetness as it cooks into the tomatoes.
- Cloves
- Contribute warm, aromatic spice flavor to the sauce.
The step that matters
Cooking the butter and flour mixture until smooth and brown. Flour must be stirred smooth in hot fat so it does not form lumps, and cooking it fully removes the raw, floury taste. Browning the roux also adds deeper, nutty flavor to the finished sauce.
Flavor stand-ins for the onion
How well each one fits the dish's main ingredients (tomato, butter, flour, clove, pepper):
- Capsicumbetter flavor fit
- Eggplantbetter flavor fit
- Okrabetter flavor fit
- Onionthe original
Fit is the average pairing score against tomato, butter, flour, clove, pepper. Candidates are from the same food group and used in at least 100 recipes. This compares flavor only: it does not check the job the ingredient does in the dish (bulk, moisture, acidity, structure).
“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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