Why it works: Parsley and pepper match in chemistry and in kitchens. They rank in the top 2% of all ingredient pairs, and cooks put them together in 34,122 recipes. Both carry 4'-methylacetophenone, which smells bitter almond. The science ↓
Tomato Sauce
Ingredients
Directions
In a pot, combine the stewed tomatoes, chopped onion, bay leaf, parsley, and mace.
Simmer slowly for 10 minutes.
In a separate pan, melt the butter and mix in the flour until smooth.
Press the tomato mixture through a sieve and add it to the butter and flour.
Stir continually until it boils, then season with salt and pepper.
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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Parsley + peppertop 2% of all pairsSmell alikestrongCooked together34,122 recipes
Shared aroma: 4'-methylacetophenone (bitter almond).
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Tomato + peppertop 7% of all pairsSmell alikemoderateCooked together17,923 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
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Tomato + oniontop 8% of all pairsSmell alikemoderateCooked together20,633 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
-
Tomato + parsleytop 8% of all pairsSmell alikemoderateCooked together5,398 recipes
Shared aroma: 4'-methylacetophenone (bitter almond).
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Onion + parsleytop 9% of all pairsSmell alikemoderateCooked together25,843 recipes
Shared aroma: 2,4-decadienal (seaweed).
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Stewed tomatoes
- Provide the main body and tomato flavour of the sauce.
- Butter
- Adds richness and fat, carrying flavour through the sauce.
- Flour
- Thickens the sauce as it cooks with the butter and liquid.
The step that matters
Stir continually until it boils. Flour thickens liquid only when it is stirred into the hot fat and liquid; without constant stirring it can clump and leave lumps in the sauce.
Swap the mace
How well each one fits the dish's main ingredients (tomato, butter, flour, onion, parsley, pepper):
- Thymefits better
- Garlicfits better
- Capersfits better
- Macethe original
Fit is the average pairing score against tomato, butter, flour, onion, parsley, pepper. 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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