Why it works: Butter and flour are a kitchen classic. They rank in the top 12% of all ingredient pairs, and cooks put them together in 124,287 recipes. Both carry isobutyraldehyde, which smells malty, green. The science ↓
Curried Eggs
Ingredients
Directions
The book says “a very hot oven”. The 400°F (200°C) in the steps is the modern equivalent, not the book's own figure.
Make the curry sauce
Melt the butter in a pan and fry the chopped onion without browning.
Add the curry powder and lemon juice, fry gently for a minute.
Stir in the flour and cook for another minute.
Add the stock and chopped apple, stir until boiling, then simmer gently for 30 minutes with the lid on, stirring occasionally.
Add the eggs and serve
Warm half of the egg pieces in the curry mixture until hot.
Pour the curry mixture onto a serving dish.
Arrange the remaining egg pieces around the mixture.
Optionally, place the dish in a 400°F (200°C) oven for 2–3 minutes to ensure it is hot.
Serve with boiled rice on the side.
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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Butter + flourtop 12% of all pairsSmell alikelowCooked together124,287 recipes
Shared aroma: isobutyraldehyde (malty, green).
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Apple + lemontop 14% of all pairsSmell alikemoderateCooked together7,551 recipes
Shared aroma: trans-2-nonenal (cardboard, fatty).
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Butter + appletop 14% of all pairsSmell alikemoderateCooked together8,706 recipes
Shared aroma: trans-2-nonenal (cardboard, fatty).
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Butter + oniontop 15% of all pairsSmell alikemoderateCooked together42,912 recipes
Shared aroma: decanal (soap, orange peel).
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Flour + eggtop 15% of all pairsSmell alikelowCooked together106,462 recipes
Shared aroma: isobutyraldehyde (malty, green).
Butter and flour barely smell alike, yet cooks put them together in 124,287 recipes: they work on texture and structure more than aroma.
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Butter
- Adds richness and carries the curry flavour through the onion.
- Onion
- Builds the sweet, savoury base of the sauce as it softens without browning.
- Curry powder
- Provides the main spice flavour and aroma when fried briefly in fat.
- Flour
- Thickens the stock into a smooth sauce that coats the eggs.
- Apple
- Adds mild sweetness and body that softens during simmering.
- Hard-boiled eggs
- Form the main protein, gently warmed so they stay tender in the sauce.
The step that matters
Simmer gently with the lid on. Boiling hard or leaving the lid off can reduce the sauce unevenly and toughen the egg whites as they reheat, so keep the heat low and stir occasionally.
Swap the onion
How well each one fits the dish's main ingredients (butter, apple, flour, egg, lemon):
- Shallotfits better
- Arrowrootfits better
- Asparagusfits better
- Onionthe original
Fit is the average pairing score against butter, apple, flour, egg, lemon. 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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