Why it works: Pepper and lemon 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 ↓
Share Sauce
Ingredients
Directions
Prepare
Boil the cleaned stocks until tender.
Boil the pickling onions until tender and remove their skins.
Slice the beef and stew it in a sharp sauce for about 10 minutes.
Make the sauce
In a pan, fry the minced onion in butter until brown.
Dust in the flour and let it fry until brown.
Add salt, pepper, and lemon juice to the mixture.
Make the egg balls and serve
In a bowl, crush the hard boiled eggs and mix with salt and half the raw egg yolk.
Form the egg mixture into small balls, about the size of a nutmeg.
Before serving, add the egg balls to the sauce and toss gently.
Fry some bacon slices and serve them with the dish.
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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Pepper + lemontop 3% of all pairsSmell alikestrongCooked together27,047 recipes
Shared aroma: trans-2-nonenal (cardboard, fatty).
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Onion + beeftop 7% of all pairsSmell alikemoderateCooked together17,092 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
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Beef + peppertop 10% of all pairsSmell alikemoderateCooked together18,971 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
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Onion + peppertop 11% of all pairsSmell alikemoderateCooked together68,474 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
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Butter + flourtop 12% of all pairsSmell alikelowCooked together124,287 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
- Fat that cooks the minced onion and flour, adding richness and browning.
- Flour
- Thickens the sauce as it fries with the butter and onion.
- Hard boiled eggs
- Crushed and shaped into balls, giving the dish its body and texture.
- Raw egg yolk
- Binds the crushed egg mixture so it holds together in balls.
- Lemon juice
- Adds acidity that brightens the rich, savory sauce.
The step that matters
Browning the flour in the butter and onion. Flour that is cooked too briefly tastes raw and will not thicken well. Cooking it in fat until it turns brown develops flavor and a stable thickened base for the sauce.
Swap the onion
How well each one fits the dish's main ingredients (beef, butter, flour, pepper, lemon, egg):
- Asparagusfits better
- Shallotfits better
- Chivefits better
- Onionthe original
Fit is the average pairing score against beef, butter, flour, pepper, lemon, egg. 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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