Why it works: Pepper and parsley match in chemistry and in kitchens. They rank in the top 2% of all ingredient pairs, and cooks put them together in 34,122 recipes. Both carry 4'-methylacetophenone, which smells bitter almond. The science ↓
Brown Stew of Liver
Ingredients
Directions
Prepare the liver
Soak the liver in cold saltwater for 30 minutes, then wipe and cut into 1‑inch square pieces.
Make the sauce
Fry the sliced onion in dripping until browned, then remove the onion.
Add the browned flour to the fat and stir to make a smooth roux, gradually adding 1 cup of boiling water.
Transfer the roux to a saucepan, add the liver and another cup of hot water, cover, and stew slowly for 1 hour or until tender.
Season and serve
Season with pepper, salt, parsley, and tomato ketchup, then serve in a deep dish.
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 + parsleytop 2% of all pairsSmell alikestrongCooked together34,122 recipes
Shared aroma: 4'-methylacetophenone (bitter almond).
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Pepper + tomatotop 7% of all pairsSmell alikemoderateCooked together17,923 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
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Onion + tomatotop 8% of all pairsSmell alikemoderateCooked together20,633 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
-
Tomato + parsleytop 8% of all pairsSmell alikemoderateCooked together5,398 recipes
Shared aroma: 4'-methylacetophenone (bitter almond).
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Onion + parsleytop 9% of all pairsSmell alikemoderateCooked together25,843 recipes
Shared aroma: 2,4-decadienal (seaweed).
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, becoming tender as it stews slowly in the liquid.
- Browned flour
- Thickens the cooking fat into a smooth roux that gives the stew body.
- Dripping
- Carries the flavour of the onion and helps brown the flour.
- Onion
- Browned first in the fat to add sweetness and savoury depth to the gravy.
- Tomato ketchup
- Adds sweetness and acidity to season the finished stew.
The step that matters
Stewing the liver slowly. Gentle, covered simmering keeps the liver tender; high heat or overcooking toughens its proteins and makes it dry and grainy.
Swap the tomato
How well each one fits the dish's main ingredients (liver, onion, flour, pepper, ketchup, parsley):
- Carrotfits better
- Shallotfits better
- Turnipfits better
- Tomatothe original
Fit is the average pairing score against liver, onion, flour, pepper, ketchup, parsley. 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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