Why it works: Mustard and onion match in chemistry and in kitchens. They rank in the top 6% of all ingredient pairs, and cooks put them together in 9,259 recipes. Both carry 2-isopropyl-3-methoxypyrazine, which smells earthy, pea. The science ↓
Dressed Eggs
Ingredients
Directions
Prepare the eggs
Boil the eggs hard and cool them in water.
Peel the eggs and carefully divide the whites in half lengthwise.
Make the filling
Mash the yolks with a small amount of butter and minced ham.
Season the mixture with salt, pepper, mustard, and a very small amount of onion.
Assemble
Form the dressing into small balls and place them in the cavities of the egg whites.
Close the egg whites neatly to resemble whole eggs.
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 + oniontop 6% of all pairsSmell alikestrongCooked together9,259 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
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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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Pepper + oniontop 11% of all pairsSmell alikemoderateCooked together68,474 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
-
Ham + mustardtop 14% of all pairsSmell alikelowCooked together747 recipes
Shared aroma: 2-acetyl-1-pyrroline (popcorn, roasted).
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Butter + oniontop 15% of all pairsSmell alikemoderateCooked together42,912 recipes
Shared aroma: decanal (soap, orange peel).
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Eggs
- Whites provide the structure that holds the filling, and yolks form the creamy base.
- Butter
- Adds fat that makes the mashed yolk filling smooth and rich.
- Minced ham
- Adds savory flavor and a little texture to the yolk filling.
- Mustard
- Adds sharp, tangy flavor that balances the richness of the yolks.
The step that matters
Divide the whites carefully. Cutting the cooked whites gently keeps them intact so they can hold the filling. Tearing them leaves gaps and weakens the shape.
Swap the onion
The recipe marks onion as optional. How well each one fits the dish's main ingredients (egg, butter, ham, pepper, mustard):
- Shallotfits better
- Asparagusfits better
- Chivefits better
- Onionthe original
Fit is the average pairing score against egg, butter, ham, pepper, mustard. 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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