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 ↓
Ragout of Liver
Ingredients
Directions
Fry the liver
Heat the dripping in a frying pan.
Add sliced onion, chopped parsley, and minced bacon, and cook until hot.
Add liver pieces and fry until brown, turning often.
Remove the liver and keep warm in a covered dish.
Strain the gravy and rinse the frying pan.
Make the sauce
Return the pan to the heat with the gravy and the butter mixed with browned flour, and stir until smooth.
Gradually thin with boiling water and lemon juice, then add the minced pickle and curry powder mixture.
Boil sharply.
Pour the sauce over the liver.
Add boiling water to the pan under the dish, cover, and simmer for 10 minutes.
Serve.
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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Onion + parsleytop 9% of all pairsSmell alikemoderateCooked together25,843 recipes
Shared aroma: 2,4-decadienal (seaweed).
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Butter + flourtop 12% of all pairsSmell alikelowCooked together124,287 recipes
Shared aroma: isobutyraldehyde (malty, green).
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Parsley + flourtop 12% of all pairsSmell alikemoderateCooked together16,675 recipes
Shared aroma: isobutyraldehyde (malty, green).
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Onion + buttertop 15% of all pairsSmell alikemoderateCooked together42,912 recipes
Shared aroma: decanal (soap, orange peel).
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
- Liver
- Is the main protein; browning it in fat gives savoury flavour and a firm exterior.
- Browned flour
- Thickens the gravy as it cooks, giving the sauce body and a nutty, toasted taste.
- Dripping
- Fat for frying that browns the liver and carries flavour into the gravy.
- Lemon juice
- Adds acidity that brightens the rich, fried flavours of the sauce.
- Curry powder
- Adds warm, aromatic spice flavour to the sauce.
- Butter
- Enriches the sauce with fat, adding smoothness and rounded flavour.
The step that matters
Stir the flour and butter into the gravy until smooth. Flour clumps if it hits hot liquid unevenly. Mixing it fully with the fat and gravy, then adding liquid gradually, lets starch granules disperse and swell evenly, giving a smooth, thickened sauce.
Swap the onion
How well each one fits the dish's main ingredients (parsley, liver, butter, flour, lemon):
- Shallotfits better
- Chivefits better
- Leekfits better
- Onionthe original
Fit is the average pairing score against parsley, liver, butter, flour, 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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