Why it works: Pepper and lemon match in chemistry and in kitchens. They rank in the top 3% of all ingredient pairs, and cooks put them together in 27,047 recipes. Both carry trans-2-nonenal, which smells cardboard, fatty. The science ↓
Calf’s Liver and Bacon
Ingredients
Directions
Prepare
Cut the liver into thin slices.
Fry the bacon until crispy and place on a hot dish.
Cook the liver
In the bacon fat, fry the liver, seasoning with pepper and salt, and dredging with a little flour.
Turn the liver occasionally to prevent burning.
Once cooked, arrange the liver around the dish with a slice of bacon between each piece.
Make the sauce and serve
Pour off excess bacon fat, add butter, a little flour, lemon juice, and water to the pan.
Bring to a boil and pour the sauce in the center of the 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 + lemontop 3% of all pairsSmell alikestrongCooked together27,047 recipes
Shared aroma: trans-2-nonenal (cardboard, fatty).
-
Butter + flourtop 12% of all pairsSmell alikelowCooked together124,287 recipes
Shared aroma: isobutyraldehyde (malty, green).
-
Butter + lemontop 16% of all pairsSmell alikemoderateCooked together41,227 recipes
Shared aroma: 3-hexenal (apple, fruity).
-
Lemon + flourtop 17% of all pairsSmell alikemoderateCooked together30,404 recipes
Shared aroma: isobutyraldehyde (malty, green).
-
Pepper + flourtop 19% of all pairsSmell alikemoderateCooked together50,459 recipes
Shared aroma: isobutyraldehyde (malty, green).
Butter and flour barely smell alike, yet cooks put them together in 124,287 recipes: they work on texture and structure more than aroma.
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Calf's liver
- Forms the main body of the dish, cooked quickly to stay tender inside.
- Bacon
- Adds salty, savory fat that flavors the liver and crisps for contrast.
- Flour
- Dredging coats the liver, helping it brown and thickening the pan sauce.
- Lemon juice
- Adds acidity that brightens the rich liver and bacon fat.
- Butter
- Adds fat and richness to the pan sauce.
The step that matters
Turning the liver occasionally. Liver is thin and lean, so it dries out and toughens quickly. Turning it regularly exposes both sides to even heat, preventing burning and keeping the interior moist.
“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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