Why it works: Pepper and clove 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 ↓
Another Tomato Soup
Ingredients
Directions
Make the stock
Place the bones, onion, carrot, and tomatoes in a pot.
Add pepper and cloves, then boil for 2-3 hours.
Strain out the bones and tomato seeds.
Skim off the fat.
Return the soup to the pot.
Thicken and finish
Add cold water.
Stir in arrowroot and ground rice or flour.
Add sugar.
Boil for 10 minutes.
Serve
Place toasted bread squares in a tureen.
Pour the soup over the bread squares.
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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Pepper + clovetop 5% of all pairsAroma overlapstrongMentioned together17,451 recipes
Shared aroma: ethyl octanoate (fruity, wine).
-
Carrot + clovetop 5% of all pairsAroma overlapstrongMentioned together5,873 recipes
Shared aroma: cuminaldehyde (Spicy, cumin).
-
Carrot + peppertop 6% of all pairsAroma overlapstrongMentioned together14,555 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
-
Carrot + tomatotop 6% of all pairsAroma overlapstrongMentioned together3,606 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
-
Onion + carrottop 6% of all pairsAroma overlapmoderateMentioned together21,601 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 main body, flavour and acidity of the soup.
- Arrowroot
- Thickens the soup into a smooth, glossy body without clouding it.
- Ground rice or flour
- Adds body and thickening to the soup along with the arrowroot.
- Sugar
- Balances the acidity of the tomatoes with sweetness.
- Bones
- Add savoury depth and body to the stock through long simmering.
The step that matters
Thickening the soup after the stock. Starch thickeners such as arrowroot and flour must be stirred into liquid and then boiled to swell and set properly. Adding them to stock that is not simmering can leave lumps or a thin, uneven texture.
Flavor stand-ins for the onion
How well each one fits the dish's main ingredients (carrot, tomato, pepper, clove, arrowroot, rice, sugar):
- Capsicumbetter flavor fit
- Turnipbetter flavor fit
- Parsnipbetter flavor fit
- Onionthe original
Fit is the average pairing score against carrot, tomato, pepper, clove, arrowroot, rice, sugar. 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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