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 ↓
Stuffed Eggs
Ingredients
Directions
Prepare the filling
Cut the hard-boiled eggs in half lengthwise without breaking the whites.
Scoop out the yolks and mash them into a paste.
Moisten the yolk paste with melted butter, olive oil, gravy, cream sauce, stock, or a raw egg.
Add an equal amount of minced meat, fish, cheese, truffles, or mushrooms to the yolk paste.
Season the mixture with salt, pepper, mustard, onion, and curry powder to taste.
Mix everything well together.
Fill and serve
Fill the egg whites with the mixture and press them together.
If desired, scoop out more of the whites to hold additional filling.
If there is leftover filling, cover the eggs, roll them in raw egg, and coat with breadcrumbs before frying.
Serve the stuffed eggs hot with various sauces or cold with lettuce and dressing.
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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Olive + mustardtop 8% of all pairsSmell alikestrongCooked together5,950 recipes
Shared aroma: eucalyptol (eucalyptus, herbal).
-
Butter + creamtop 8% of all pairsSmell alikemoderateCooked together41,516 recipes
Shared aroma: delta-dodecalactone (sweet, creamy).
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Olive + oniontop 8% of all pairsSmell alikemoderateCooked together29,779 recipes
Shared aroma: 2,4-decadienal (seaweed).
-
Pepper + mustardtop 9% of all pairsSmell alikemoderateCooked together15,430 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
- Hard-boiled eggs
- The whites form the shell that holds the filling, and the yolks become the base of the filling.
- Egg yolks
- Mashed into a paste, they give the filling its rich, creamy body.
- Melted butter
- Adds fat and moisture, making the yolk paste softer and richer in flavour.
- Olive oil or gravy
- Moistens the yolk paste, adding fat or savoury flavour and keeping the filling smooth.
- Minced meat, fish, cheese, truffles, or mushrooms
- Adds savoury bulk and flavour to the yolk paste, balancing its richness.
- Raw egg
- Binds the filling and, when used as a coating, helps breadcrumbs stick before frying.
The step that matters
Cutting the eggs lengthwise without breaking the whites. Whites are delicate and tear easily when hot or overcooked, so a clean cut keeps them intact to hold the filling. Firm, fully cooked eggs cut more cleanly than undercooked ones.
Swap the mustard
How well each one fits the dish's main ingredients (egg, butter, olive, cream, meat, pepper, onion):
- Potatofits better
- Capsicumfits better
- Spinachfits about as well
- Mustardthe original
Fit is the average pairing score against egg, butter, olive, cream, meat, pepper, onion. 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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