Why it works: Parsley and thyme match in chemistry and in kitchens. They rank in the top 1% of all ingredient pairs, and 9,057 recipes mention both. Both carry cuminaldehyde, which smells Spicy, cumin. The science ↓
Tomato Sauce
Ingredients
Directions
Prepare the base
In a saucepan, melt the butter over medium heat.
Add the sliced onions, carrots, and raw ham; fry until browned.
Simmer the sauce
Stir in the quartered tomatoes, parsley, thyme, pepper, bay leaves, and salt.
Cover and cook slowly until done.
Thicken the sauce with flour diluted in cold broth to the desired consistency.
Stir well with a wooden spoon until it boils, then cook slowly for 30 minutes.
Finish and strain
Remove the ham and herb bundle, and strain the sauce through a fine sieve.
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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Parsley + thymetop 1% of all pairsAroma overlapstrongMentioned together9,057 recipes
Shared aroma: cuminaldehyde (Spicy, cumin).
-
Carrot + parsleytop 1% of all pairsAroma overlapstrongMentioned together8,053 recipes
Shared aroma: 2,4-decadienal (seaweed).
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Parsley + peppertop 2% of all pairsAroma overlapstrongMentioned together34,122 recipes
Shared aroma: 4'-methylacetophenone (bitter almond).
-
Carrot + thymetop 3% of all pairsAroma overlapstrongMentioned together4,563 recipes
Shared aroma: cuminaldehyde (Spicy, cumin).
-
Thyme + peppertop 4% of all pairsAroma overlapmoderateMentioned together11,585 recipes
Shared aroma: beta-phellandrene (minty, terpene).
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Butter
- Adds fat and flavour to the base as it melts and browns the vegetables.
- Onions
- Build sweetness and savoury depth as they soften and brown in the fat.
- Ripe tomatoes
- Provide the main body, moisture and acidity of the sauce as they cook down.
- Flour
- Thickens the sauce so it becomes smooth and coats a spoon.
The step that matters
Thickening with diluted flour. Flour added directly to hot liquid clumps, so it must be mixed with cold broth first and stirred well while the sauce comes to a boil, so starch grains swell evenly and the sauce thickens smoothly.
Flavor stand-ins for the onion
How well each one fits the dish's main ingredients (butter, carrot, ham, tomato, parsley, thyme, pepper):
- Capsicumbetter flavor fit
- Parsnipbetter flavor fit
- Potatobetter flavor fit
- Onionthe original
Fit is the average pairing score against butter, carrot, ham, tomato, parsley, thyme, 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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