Why it works: Lemon and pepper match in chemistry and in kitchens. They rank in the top 2% of all ingredient pairs, and 27,039 recipes mention both. Both carry 2-nonenal, which smells fatty, green. The science ↓
The recipe
Ingredients
Contains: milk, wheat (auto-detected from the ingredients and method; we can miss things, so check labels)
Directions
Prepare the heart
Fluff the calf's heart with forcemeat and place it in an earthen dish with a little water underneath.
Cover the heart with butter and dredge it with flour.
Make the minced meat
Boil half the liver and all the lights together for half an hour, then chop them finely.
In a pan, combine the chopped liver and lights with gravy, lemon pickle, ketchup, lemon juice, pepper, and salt.
Thicken the mixture with butter rolled in flour.
Pour the minced meat into the bottom of a serving dish.
Fry the remaining liver in thin slices and bits of bacon, then place them over the minced meat.
Serve
Set the heart in the middle and serve.
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 aroma chemistry they share, and how many recipes mention both.
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Lemon + peppertop 2% of all pairsAroma overlapstrongMentioned together27,039 recipes
Shared aroma: 2-nonenal (fatty, green).
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Butter + flourtop 6% of all pairsAroma overlaplowMentioned together122,858 recipes
Shared aroma: isobutyraldehyde (malty, green).
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Butter + lemontop 8% of all pairsAroma overlapstrongMentioned together41,197 recipes
Shared aroma: 3-hexenal (apple, fruity).
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Flour + ketchuptop 8% of all pairsAroma overlapstrongMentioned together2,426 recipes
Shared aroma: ethanol (alcoholic, ethereal).
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Butter + livertop 9% of all pairsAroma overlapmoderateMentioned together2,065 recipes
Shared aroma: guaiacol (smoky, sweet).
Butter and flour share little aroma chemistry, yet 122,858 recipes mention both: they likely 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 heart
- Forms the main body of the dish, cooked whole as the centrepiece.
- Liver
- Provides rich, meaty flavour to both the minced filling and the fried topping.
- Butter
- Adds richness and helps thicken the sauce when rolled in flour.
- Flour
- Thickens the sauce and helps form a light coating on the heart.
- Gravy
- Supplies the liquid base and savoury depth of the minced meat.
- Bacon
- Adds salty, smoky fat and crisp texture to the topping.
The step that matters
Thicken the mixture with butter rolled in flour. Adding flour-coated butter directly to hot liquid can clump; the butter and flour must be well worked in so the sauce thickens smoothly as the starch gelatinises with heat.
“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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