Why it works: Flour and shallot match in chemistry and in kitchens. They rank in the top 6% of all ingredient pairs, and cooks put them together in 2,081 recipes. Both carry isobutyraldehyde, which smells malty, green. The science ↓
Calf’s Liver with Piquante Sauce
Ingredients
Directions
Prepare the liver
Wash and dry the liver thoroughly.
Cut the liver into neat slices.
Mix 1 tablespoon of flour, ½ teaspoon of salt, and ¼ teaspoon of pepper together.
Dip the liver slices in the mixture.
Make the piquant base
In a small saucepan, combine shallots or onion, gherkins, and vinegar.
Boil the mixture rapidly for 10 minutes and keep hot.
Fry the liver
Fry the liver in hot fat until lightly cooked and browned.
Remove the liver from the pan and keep warm.
Pour away excess fat from the frying pan, leaving the brown sediment.
Make the sauce
Add butter to the pan and heat.
Sprinkle in the remaining flour. Stir the mixture. Fry slowly until browned.
Add water and seasoning to taste. Stir until boiling. Simmer gently for 5 minutes.
Strain the sauce.
Mix the strained sauce with the vinegar mixture.
Serve
Arrange the liver on a hot dish.
Pour the sauce around the liver.
Serve hot.
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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Flour + shallottop 6% of all pairsSmell alikestrongCooked together2,081 recipes
Shared aroma: isobutyraldehyde (malty, green).
-
Shallot + peppertop 11% of all pairsSmell alikemoderateCooked together5,898 recipes
Shared aroma: 2,4-decadienal (seaweed).
-
Shallot + vinegartop 12% of all pairsSmell alikemoderateCooked together2,374 recipes
Shared aroma: isobutyraldehyde (malty, green).
-
Butter + flourtop 12% of all pairsSmell alikelowCooked together124,287 recipes
Shared aroma: isobutyraldehyde (malty, green).
-
Vinegar + peppertop 14% of all pairsSmell alikemoderateCooked together27,814 recipes
Shared aroma: 4'-methylacetophenone (bitter almond).
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
- Calf's liver
- Is the main protein, cooked quickly so it stays tender and browned outside.
- Butter
- Adds richness and helps brown the flour for the sauce base.
- Flour
- Coats the liver for browning and thickens the sauce through its starch.
- Shallots or onion
- Provides savoury sweetness and aroma to the piquant sauce.
- Gherkins
- Add sharp, salty crunch that gives the sauce its piquant character.
- Vinegar
- Adds acidity that sharpens the sauce and balances the rich liver.
The step that matters
Frying the liver until just lightly cooked. Liver turns dry and grainy when overcooked, so it should be browned quickly over high heat and removed while still slightly pink inside, since it keeps cooking briefly after leaving the pan.
Swap the shallot
How well each one fits the dish's main ingredients (liver, butter, flour, vinegar, pepper):
- Shallotthe original
- Mustardfits about as well
- Capsicumfits about as well
- Chivefits less well
Fit is the average pairing score against liver, butter, flour, vinegar, pepper. 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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