Why it works: Onion and pepper are a kitchen classic. They rank in the top 11% of all ingredient pairs, and cooks put them together in 68,474 recipes. Both carry 2-isopropyl-3-methoxypyrazine, which smells earthy, pea. The science ↓
Stewed Liver
Ingredients
Directions
Prepare
Peel and slice the onions.
Cut the bacon into slices and remove the rind.
Slice the liver and sprinkle with flour.
Cook the bacon and onions
Fry the bacon in a frying pan until brown, then set aside.
In the same pan, fry the onions in the bacon fat until soft.
Stew
Pour the water into the pan with the onions, then stir in the herbs, salt, and pepper.
Add the liver and fried bacon to the pan, cover, and stew slowly for about an hour.
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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Onion + peppertop 11% of all pairsSmell alikemoderateCooked together68,474 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
-
Liver + oniontop 15% of all pairsSmell alikelowCooked together1,420 recipes
Shared aroma: furaneol (caramel, strawberry).
-
Onion + flourtop 17% of all pairsSmell alikemoderateCooked together32,460 recipes
Shared aroma: isobutyraldehyde (malty, green).
-
Flour + peppertop 19% of all pairsSmell alikemoderateCooked together50,459 recipes
Shared aroma: isobutyraldehyde (malty, green).
-
Liver + peppertop 21% of all pairsSmell alikemoderateCooked together2,375 recipes
Shared aroma: 2-nonenal (fatty, green).
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 and turns tender as it stews slowly in liquid.
- Fat bacon
- Adds fat and savoury flavour to the pan for frying the onions.
- Onions
- Soften and sweeten as they cook in the bacon fat.
- Flour
- Coats the liver and helps thicken the stewing liquid.
The step that matters
Stew slowly with the lid on. Liver turns firm and tough when it is cooked too hard or too long. A gentle, covered simmer keeps the liver moist and tender while the flour thickens the liquid.
Swap the onion
How well each one fits the dish's main ingredients (liver, flour, pepper):
- Shallotfits better
- Capsicumfits better
- Carrotfits better
- Onionthe original
Fit is the average pairing score against liver, flour, 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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