Why it works: Flour and capers match in chemistry and in kitchens. They rank in the top 6% of all ingredient pairs, and cooks put them together in 1,024 recipes. Both carry isobutyraldehyde, which smells malty, green. The science ↓
Fried Liver
Ingredients
Directions
Prepare the liver
Cover the liver slices with boiling water and let them stand for 10 minutes.
In a frying pan, heat 4 tablespoons of drippings until hot, then add the liver.
Cook slowly for 8 minutes, seasoning with salt and pepper, then remove from the pan.
Make the gravy
Add enough drippings to the pan to make 2 tablespoons, then add 2 tablespoons of flour and stir until brown.
Gradually add 1 pint of cold water, stirring until it boils.
Season with salt and pepper, simmer for 5 minutes, then add 1 teaspoon of vinegar.
Optionally, add capers to improve the sauce.
Serve
Pour the gravy over the liver and 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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Flour + caperstop 6% of all pairsSmell alikestrongCooked together1,024 recipes
Shared aroma: isobutyraldehyde (malty, green).
-
Pepper + caperstop 12% of all pairsSmell alikemoderateCooked together2,088 recipes
Shared aroma: coumarin (sweet, hay).
-
Pepper + vinegartop 14% of all pairsSmell alikemoderateCooked together27,814 recipes
Shared aroma: 4'-methylacetophenone (bitter almond).
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Vinegar + caperstop 16% of all pairsSmell alikemoderateCooked together1,453 recipes
Shared aroma: isobutyraldehyde (malty, green).
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Liver + caperstop 16% of all pairsSmell alikelowCooked together47 recipes
Shared aroma: 2-methylbutyraldehyde (malty, chocolate).
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; cooking it briefly keeps it tender and juicy.
- Flour
- Thickens the drippings into a gravy when browned and mixed with liquid.
- Drippings
- Fat for frying the liver and browning the flour, adding savory flavor.
- Vinegar
- Adds a touch of acidity that brightens the gravy.
The step that matters
Browning the flour in the drippings. Flour stirred in fat must be cooked until brown to remove raw starch taste and build color and flavor before the liquid is added. Adding the cold water too early can leave lumps.
Swap the capers
The recipe marks capers as optional. How well each one fits the dish's main ingredients (liver, pepper, flour, vinegar):
- Sagefits better
- Parsleyfits about as well
- Tarragonfits about as well
- Capersthe original
Fit is the average pairing score against liver, pepper, flour, vinegar. 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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