Why it works: Parsley and pepper match in chemistry and in kitchens. They rank in the top 2% of all ingredient pairs, and 34,122 recipes mention both. Both carry 4'-methylacetophenone, which smells bitter almond. The science ↓
Tomato Soup Without Meat
Ingredients
Directions
Fry the onion in the dripping in a soup pot until reddish-brown.
Add the tomatoes and stir until very hot.
Pour in the boiling water and add the parsley.
Stew for 30 minutes, then strain, rubbing the tomato through a sieve into the liquid.
Return the liquid to the pot, season, and bring to a boil.
Stir in the floured butter, then add the rice after a minute.
Simmer for 10 minutes and then serve.
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.
Photo for illustrative purposes only · Contact us to use it
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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Parsley + peppertop 2% of all pairsAroma overlapstrongMentioned together34,122 recipes
Shared aroma: 4'-methylacetophenone (bitter almond).
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Onion + parsleytop 9% of all pairsAroma overlapmoderateMentioned together25,843 recipes
Shared aroma: 2,4-decadienal (seaweed).
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Onion + ricetop 9% of all pairsAroma overlapmoderateMentioned together10,433 recipes
Shared aroma: 2,4-decadienal (seaweed).
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Parsley + ricetop 10% of all pairsAroma overlapstrongMentioned together2,762 recipes
Shared aroma: 4'-methylacetophenone (bitter almond).
-
Onion + peppertop 11% of all pairsAroma overlapmoderateMentioned together68,474 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
Flavor stand-ins for the onion
How well each one fits the dish's main ingredients (parsley, butter, flour, pepper, sugar, rice):
- Shallotbetter flavor fit
- Carrotbetter flavor fit
- Okrabetter flavor fit
- Onionthe original
Fit is the average pairing score against parsley, butter, flour, pepper, sugar, rice. 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).
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