Why it works: Mustard and lettuce match in chemistry and in kitchens. They rank in the top 1% of all ingredient pairs, and cooks put them together in 1,356 recipes. Both carry 2-isopropyl-3-methoxypyrazine, which smells earthy, pea. The science ↓
Deviled Eggs
Ingredients
Directions
Prepare
Cut the hard-boiled eggs in half and remove the yolks.
In a bowl, mash the yolks with butter, mustard, lemon juice or vinegar, sugar, salt, and cayenne pepper until smooth.
Fill and serve
Fill the egg whites with the yolk mixture.
Chill the deviled eggs before serving on lettuce leaves, garnished with parsley.
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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Mustard + lettucetop 1% of all pairsSmell alikestrongCooked together1,356 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
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Lemon + parsleytop 1% of all pairsSmell alikestrongCooked together14,037 recipes
Shared aroma: beta-phellandrene (minty, terpene).
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Pepper + parsleytop 2% of all pairsSmell alikestrongCooked together34,122 recipes
Shared aroma: 4'-methylacetophenone (bitter almond).
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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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Lettuce + parsleytop 5% of all pairsSmell alikestrongCooked together1,483 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
- Egg yolks
- Form the creamy filling that gives the deviled eggs their body and richness.
- Butter
- Adds fat to the yolk filling, making it smoother and richer in texture.
- Mustard
- Adds sharp, pungent flavor that balances the richness of the yolks.
- Lemon juice or vinegar
- Adds acidity that brightens the filling and cuts through its richness.
- Sugar
- Adds a small amount of sweetness that balances the acidity and mustard.
The step that matters
Mash the yolks until smooth. Yolks mashed with fat and acid form a smooth emulsion; lumps left behind stay grainy and the filling separates less evenly, so mash thoroughly before piping or spooning.
Swap the lettuce
How well each one fits the dish's main ingredients (egg, butter, mustard, lemon, sugar, pepper, parsley):
- Shallotfits better
- Chivefits about as well
- Horseradishfits about as well
- Lettucethe original
Fit is the average pairing score against egg, butter, mustard, lemon, sugar, pepper, 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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