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 ↓
Eggs, with Tomato Sauce
Ingredients
Directions
Prepare the eggs
Boil the eggs hard.
Cut the boiled eggs lengthwise.
Lay the cut eggs on a dish.
Make the sauce
Cook the tomatoes with onion, parsley, cloves, and bay leaf for 15 minutes.
Strain the tomato mixture.
Melt the butter and add the flour to it.
Add the strained tomato mixture to the butter and flour, then stir until thickened.
Add salt and pepper to the sauce before serving.
Assemble and serve
Cover the eggs with tomato sauce.
Stand the covered eggs over hot water for about 10 minutes.
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.
-
Parsley + peppertop 2% of all pairsAroma overlapstrongMentioned together34,122 recipes
Shared aroma: 4'-methylacetophenone (bitter almond).
-
Clove + peppertop 5% of all pairsAroma overlapstrongMentioned together17,451 recipes
Shared aroma: ethyl octanoate (fruity, wine).
-
Parsley + clovetop 6% of all pairsAroma overlapstrongMentioned together6,768 recipes
Shared aroma: cuminaldehyde (Spicy, cumin).
-
Tomato + peppertop 7% of all pairsAroma overlapmoderateMentioned together17,923 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
-
Tomato + oniontop 8% of all pairsAroma overlapmoderateMentioned together20,633 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
- Eggs
- Form the main body of the dish, holding their shape when cut and served in sauce.
- Tomatoes
- Provide the bulk of the sauce, with acidity and moisture.
- Butter
- Adds richness and fat, and forms the base of the thickened sauce with flour.
- Flour
- Thickens the sauce when cooked with melted butter and tomato liquid.
The step that matters
Stir until thickened. Flour must cook in the melted butter and tomato mixture while stirring, otherwise the sauce can stay floury or form lumps. Stirring keeps the starch dispersed so it thickens smoothly.
Flavor stand-ins for the onion
How well each one fits the dish's main ingredients (egg, tomato, parsley, clove, butter, flour, pepper):
- Capsicumbetter flavor fit
- Shallotbetter flavor fit
- Carrotbetter flavor fit
- Onionthe original
Fit is the average pairing score against egg, tomato, parsley, clove, butter, flour, 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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