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 ↓
1st Lesson. New Style of Dressing Liver in Frying-pan
Ingredients
Directions
Prepare the liver
Remove the sinew and veins from the ox liver.
Cut the liver into long slices, half an inch thick.
Fry and make the sauce
Heat the dripping in a frying pan.
Add three pieces of liver at a time to the hot fat until set.
Cut the bacon into small dice and fry in the fat.
Dice the cooked liver and add it to the bacon.
Stir in the chopped onions, parsley, flour, salt, and pepper.
Gradually add the water, stirring until the mixture thickens.
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).
-
Onion + parsleytop 9% of all pairsSmell alikemoderateCooked together25,843 recipes
Shared aroma: 2,4-decadienal (seaweed).
-
Onion + peppertop 11% of all pairsSmell alikemoderateCooked together68,474 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
-
Parsley + flourtop 12% of all pairsSmell alikemoderateCooked together16,675 recipes
Shared aroma: isobutyraldehyde (malty, green).
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Liver + oniontop 15% of all pairsSmell alikelowCooked together1,420 recipes
Shared aroma: furaneol (caramel, strawberry).
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Ox liver
- Forms the main body of the dish and cooks to a firm, set texture when fried.
- Flour
- Thickens the pan juices and fat into a smoother, binding sauce.
- Bacon
- Adds salty, smoky fat that flavours the mixture as it fries.
- Dripping
- Conducts heat for frying and carries flavour into the liver and bacon.
The step that matters
Add the liver to hot fat in small batches. Crowding the pan cools the fat, so the liver steams instead of searing. Hot fat sets the surface quickly, keeping the slices tender inside.
Swap the onion
How well each one fits the dish's main ingredients (liver, parsley, flour, pepper):
- Carrotfits better
- Shallotfits better
- Turnipfits better
- Onionthe original
Fit is the average pairing score against liver, parsley, 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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