Why it works: Lemon and pepper match in chemistry and in kitchens. They rank in the top 3% of all ingredient pairs, and cooks put them together in 27,047 recipes. Both carry trans-2-nonenal, which smells cardboard, fatty. The science ↓
Devilled Egg
Ingredients
Directions
Prepare
Cut the hard-cooked egg in half lengthwise.
Remove the yolk and mash it into a paste with olive oil or butter, lemon juice, salt, and cayenne.
Fill and serve
Add the chopped ham or tongue and mustard, mixing well.
Refill the egg whites with the yolk mixture.
Serve on a lettuce leaf.
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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Lemon + peppertop 3% of all pairsSmell alikestrongCooked together27,047 recipes
Shared aroma: trans-2-nonenal (cardboard, fatty).
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Lemon + olivetop 7% of all pairsSmell alikemoderateCooked together11,922 recipes
Shared aroma: 3-hexenal (apple, fruity).
-
Olive + mustardtop 8% of all pairsSmell alikestrongCooked together5,950 recipes
Shared aroma: eucalyptol (eucalyptus, herbal).
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Pepper + mustardtop 9% of all pairsSmell alikemoderateCooked together15,430 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
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Lemon + mustardtop 11% of all pairsSmell alikestrongCooked together3,816 recipes
Shared aroma: eucalyptol (eucalyptus, herbal).
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Egg yolk
- Forms the creamy base that gives the filling its smooth, rich texture.
- Olive oil or butter
- Adds fat that smooths the mashed yolk into a spreadable paste.
- Lemon juice
- Adds acidity that brightens the rich yolk and balances the fat.
- Mustard
- Adds sharp flavour and some emulsifying help to the yolk filling.
The step that matters
Mashing the yolk with fat and acid. The yolk must be mashed smooth before the other ingredients go in. Fat and lemon juice must be worked in gradually so the mixture stays creamy rather than breaking or turning lumpy.
Swap the mustard
How well each one fits the dish's main ingredients (egg, lemon, olive, pepper, ham):
- Capsicumfits better
- Asparagusfits better
- Spinachfits better
- Mustardthe original
Fit is the average pairing score against egg, lemon, olive, pepper, ham. 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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