Why it works: Pepper and parsley 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 ↓
Omelet
Ingredients
Directions
Prepare
Break the eggs into a bowl and beat until frothy.
Add salt, pepper, chopped parsley, and onion; mix well.
Cook and serve
Melt butter in a frying pan over medium heat until frothy.
Pour in the egg mixture and stir quickly, scraping the bottom to prevent sticking.
When the mixture begins to set, push it to one side to form a semicircle.
Reduce heat and hold the pan in front of the fire to cook the top.
Once the top shows brown, slide the omelet onto a dish.
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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Pepper + parsleytop 2% of all pairsSmell alikestrongCooked together34,122 recipes
Shared aroma: 4'-methylacetophenone (bitter almond).
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Parsley + oniontop 9% of all pairsSmell alikemoderateCooked together25,843 recipes
Shared aroma: 2,4-decadienal (seaweed).
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Pepper + oniontop 11% of all pairsSmell alikemoderateCooked together68,474 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
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Butter + oniontop 15% of all pairsSmell alikemoderateCooked together42,912 recipes
Shared aroma: decanal (soap, orange peel).
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Butter + parsleytop 15% of all pairsSmell alikemoderateCooked together28,563 recipes
Shared aroma: trans-2-hexenal (green, leafy).
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Eggs
- Set into the structure of the omelet as they cook, forming its body.
- Butter
- Coats the pan to prevent sticking and adds richness and flavor to the omelet.
- Parsley
- Adds fresh, herbal aroma and a touch of color to the eggs.
- Onion
- Adds mild sharpness and aroma that flavors the egg mixture.
The step that matters
Pouring and stirring the egg mixture. Eggs set quickly over heat. Stirring while they begin to set keeps curds small and tender, and scraping the bottom prevents sticking and scorching.
Swap the onion
How well each one fits the dish's main ingredients (egg, pepper, butter, parsley):
- Shallotfits better
- Chivefits better
- Carrotfits better
- Onionthe original
Fit is the average pairing score against egg, pepper, butter, parsley. 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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