Why it works: Parsley and pepper 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 ↓
Calf's Liver and Tomatoes
Ingredients
Directions
Prepare the onion and liver
Heat butter in a pan until boiling.
Add chopped onions and parsley and cook until softened.
Dip each piece of liver in the onion mixture and cook slightly.
Remove the liver.
Coat and fry
Dip in beaten eggs and coat with breadcrumbs.
Fry in boiling oil until golden brown.
Prepare and cook the tomatoes
Scald and skin the tomatoes, then slice them.
Combine sliced tomatoes with a little butter, salt, and cayenne, and cook until tender.
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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Parsley + peppertop 2% of all pairsSmell alikestrongCooked together34,122 recipes
Shared aroma: 4'-methylacetophenone (bitter almond).
-
Tomato + peppertop 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).
-
Parsley + tomatotop 8% of all pairsSmell alikemoderateCooked together5,398 recipes
Shared aroma: 4'-methylacetophenone (bitter almond).
-
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
- Calf's liver
- Is the main protein, cooked quickly so it stays tender inside a golden coating.
- Eggs
- Bind the breadcrumb coating to the liver so it adheres during frying.
- Breadcrumbs
- Form a crisp, browned outer crust when fried.
- Onions
- Soften and sweeten in butter, adding a savoury flavour base to the liver.
- Tomatoes
- Add moisture and gentle acidity that balances the rich liver.
- Butter
- Adds richness and flavour to the onions and tomatoes.
The step that matters
Fry in boiling oil until golden brown. Frying at high heat quickly sets the egg and breadcrumb coating into a crisp crust. Overcooking the thin liver pieces toughens them, so they should be removed as soon as they are golden.
Swap the tomato
How well each one fits the dish's main ingredients (liver, butter, onion, parsley, egg, pepper):
- Chivefits better
- Carrotfits better
- Potatofits better
- Tomatothe original
Fit is the average pairing score against liver, butter, onion, parsley, egg, 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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