Why it works: Parsley and lemon match in chemistry and in kitchens. They rank in the top 1% of all ingredient pairs, and cooks put them together in 14,037 recipes. Both carry beta-phellandrene, which smells minty, terpene. The science ↓
Beef, Hash
Ingredients
Directions
Make the sauce
Melt the butter in a stewpan and add a little flour.
Stir in the chopped onion and parsley, browning the mixture without burning it.
Add the boiling broth, pepper, salt, and nutmeg.
Heat and thicken
Incorporate slices of cold beef and heat gradually by the side of the fire.
Thicken the sauce with flour mixed in water or beaten eggs mixed with lemon juice when the sauce is near boiling.
Cook for 15 minutes.
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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Parsley + lemontop 1% of all pairsSmell alikestrongCooked together14,037 recipes
Shared aroma: beta-phellandrene (minty, terpene).
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Parsley + peppertop 2% of all pairsSmell alikestrongCooked together34,122 recipes
Shared aroma: 4'-methylacetophenone (bitter almond).
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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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Parsley + nutmegtop 3% of all pairsSmell alikestrongCooked together5,062 recipes
Shared aroma: 4'-methylacetophenone (bitter almond).
-
Nutmeg + lemontop 5% of all pairsSmell alikestrongCooked together11,318 recipes
Shared aroma: beta-phellandrene (minty, terpene).
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Beef
- Forms the main body of the hash, heated gently so it stays tender in the sauce.
- Eggs
- Thicken the sauce as they set with gentle heat, giving it body and a smooth texture.
- Butter
- Carries the flavour of the onion and parsley and adds richness to the sauce.
- Flour
- Helps thicken the sauce and gives the base body when cooked in the butter.
- Broth
- Forms the liquid of the sauce, carrying the seasonings through the dish.
The step that matters
Thickening the sauce with eggs. Egg proteins set when heated, so the sauce can curdle or turn grainy if it boils hard. Add the egg and lemon mixture only when the sauce is near boiling, and keep the heat gentle.
Swap the onion
How well each one fits the dish's main ingredients (butter, flour, parsley, pepper, nutmeg, beef, lemon):
- Shallotfits better
- Carrotfits better
- Spinachfits better
- Onionthe original
Fit is the average pairing score against butter, flour, parsley, pepper, nutmeg, beef, 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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