Why it works: Pepper and tomato are a kitchen classic. They rank in the top 7% of all ingredient pairs, and cooks put them together in 17,923 recipes. Both carry 2-isopropyl-3-methoxypyrazine, which smells earthy, pea. The science ↓
Calf's Liver, Larded
Ingredients
Directions
Prepare the liver
Insert lardoons of pork into the liver, spaced half an inch apart, so they project on both sides.
Braise
In a saucepan, melt butter and add minced onion, pepper, chopped herbs, and strained tomato.
Cover the saucepan.
Place it in a frying pan of boiling water for one hour, ensuring the outer pan stays full.
Turn the liver twice during cooking.
Remove the saucepan.
Place it over low heat, cooking slowly.
When the liver is browned on one side, turn it over.
After forty minutes, boil the sauce sharply for the first time.
Remove the liver.
Keep it warm.
Finish the sauce and serve
Add boiling water to the gravy.
Strain it.
Thicken with browned flour.
Pour over the liver.
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 + tomatotop 7% of all pairsSmell alikemoderateCooked together17,923 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
-
Onion + tomatotop 8% of all pairsSmell alikemoderateCooked together20,633 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
-
Pork + livertop 9% of all pairsSmell alikemoderateCooked together1,606 recipes
Shared aroma: 1-nonanal (fatty, waxy).
-
Pork + oniontop 10% of all pairsSmell alikemoderateCooked together18,214 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
-
Pork + tomatotop 10% of all pairsSmell alikemoderateCooked together4,843 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
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 cut, cooked slowly until tender and browned.
- Fat salt pork
- Lardoons add fat and savoury flavour that keep the lean liver moist during cooking.
- Butter
- Fat for softening the onion and herbs, adding richness to the sauce.
- Small onion
- Softens and sweetens as it cooks, forming the base of the sauce.
- Strained tomato
- Adds acidity and body to the sauce.
- Browned flour
- Thickens the gravy and adds a toasted, nutty flavour.
The step that matters
Slow cooking in the outer pan. Gentle, steady heat keeps the liver tender; boiling sharply or letting the outer pan run dry would toughen the meat and reduce the sauce unevenly.
Swap the tomato
How well each one fits the dish's main ingredients (pork, liver, butter, onion, pepper, flour):
- Potatofits better
- Chivefits better
- Capsicumfits better
- Tomatothe original
Fit is the average pairing score against pork, liver, butter, onion, pepper, flour. 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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