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 ↓
Liver “a LA Menagere”
Ingredients
Directions
Prepare the liver
Cut the liver into thin slices.
In a skillet, toss the liver in butter with pepper, salt, and a bay leaf until browned.
Remove the liver and keep it warm.
Make the sauce and serve
In the same skillet, add chopped onions and brown them in the remaining butter.
Sprinkle flour over the onions and add stock; boil for 2 minutes.
Return the liver to the skillet and simmer until cooked through.
Stir in egg yolks and lemon juice, then 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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Pepper + lemontop 3% of all pairsSmell alikestrongCooked together27,047 recipes
Shared aroma: trans-2-nonenal (cardboard, fatty).
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Pepper + oniontop 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).
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Butter + oniontop 15% of all pairsSmell alikemoderateCooked together42,912 recipes
Shared aroma: decanal (soap, orange peel).
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Liver + oniontop 15% of all pairsSmell alikelowCooked together1,420 recipes
Shared aroma: furaneol (caramel, strawberry).
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
- The main ingredient, browned quickly and then cooked through in the sauce.
- Butter
- Browns the liver and onions and adds richness to the dish.
- Onions
- Browned to add sweetness and depth to the sauce.
- Flour
- Thickens the stock into a sauce as it cooks.
- Egg yolks
- Enrich and thicken the sauce, adding body and richness.
- Lemon juice
- Adds acidity that brightens the rich sauce.
The step that matters
Stir in egg yolks and lemon juice. Egg yolks thicken when heated gently but can scramble if the sauce is boiling. Adding them off the heat or at low heat, and not letting the sauce boil afterward, keeps it smooth and creamy.
Swap the onion
How well each one fits the dish's main ingredients (liver, butter, pepper, flour, egg, lemon):
- Shallotfits better
- Asparagusfits better
- Chivefits better
- Onionthe original
Fit is the average pairing score against liver, butter, pepper, 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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