Why it works: Liver and pork are a kitchen classic. They rank in the top 9% of all ingredient pairs, and cooks put them together in 1,606 recipes. Both carry 1-nonanal, which smells fatty, waxy. The science ↓
Calf's Liver a LA Mode
Ingredients
Directions
Prepare the liver
Wash the liver and soak it in cold, salted water for 30 minutes.
Wipe the liver dry.
Lard the liver with the salt pork, allowing it to project on both sides.
Brown and stew
Heat the dripping, onions, herbs, and spices in a frying pan.
Add the liver and fry both sides until light brown.
Transfer everything to a saucepan.
Add vinegar and enough water to cover the liver.
Cover with a lid and stew gently for 1.5 hours.
Make the gravy and serve
Place the liver on a hot dish.
Add the sauce to the gravy.
Strain the gravy.
Thicken the gravy with browned flour.
Bring the gravy to a boil.
Pour half of the gravy over the liver.
Serve the remaining gravy in a sauceboat.
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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Liver + porktop 9% of all pairsSmell alikemoderateCooked together1,606 recipes
Shared aroma: 1-nonanal (fatty, waxy).
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Pork + oniontop 10% of all pairsSmell alikemoderateCooked together18,214 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
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Onion + peppertop 11% of all pairsSmell alikemoderateCooked together68,474 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
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Onion + vinegartop 14% of all pairsSmell alikemoderateCooked together18,226 recipes
Shared aroma: acetic acid (sour, vinegar).
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Vinegar + peppertop 14% of all pairsSmell alikemoderateCooked together27,814 recipes
Shared aroma: 4'-methylacetophenone (bitter almond).
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Liver
- Forms the main body of the dish, becoming tender through slow, moist stewing.
- Salt pork
- Adds fat and savoury flavour that keeps the lean liver moist as it cooks.
- Onions
- Soften and sweeten as they cook, adding depth to the gravy.
- Browned flour (in the method)
- Thickens the gravy and adds a toasted, nutty flavour.
- Vinegar
- Adds acidity that brightens the rich gravy and balances the fat.
The step that matters
Stewing the liver gently with the lid on. Liver is lean and protein-dense, so high heat or prolonged boiling toughens it and makes it grainy. A gentle, covered simmer in liquid keeps the proteins tender and the liver moist.
Swap the onion
How well each one fits the dish's main ingredients (liver, pork, sauce, vinegar, pepper):
- Capsicumfits better
- Mustardfits better
- Tomatofits about as well
- Onionthe original
Fit is the average pairing score against liver, pork, sauce, 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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