Why it works: Parsley and pepper match in chemistry and in kitchens. They rank in the top 2% of all ingredient pairs, and 34,118 recipes mention both. Both carry 4'-methylacetophenone, which smells bitter almond. The science ↓
The recipe
Ingredients
Contains: egg, milk, wheat, fish, shellfish (auto-detected from the ingredients and method; we can miss things, so check labels)
Also mentioned in the method: oyster
Directions
The book gives no oven temperature. The 400°F (200°C) in the steps was added when the recipe was transcribed, as a starting point.
Prepare
Clean the piece of cod.
Make a stuffing with bread crumbs, parsley, onions, pepper, salt, and butter, moistened with egg.
Stuff the mixture into the open part of the fish and secure it with skewers.
Bake and serve
Rub the fish with beaten egg and sprinkle with bread crumbs, pepper, and salt.
Dot with bits of butter.
Bake in a 400°F (200°C) oven until cooked through.
Serve with melted butter or oyster sauce.
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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Parsley + peppertop 2% of all pairsAroma overlapstrongMentioned together34,118 recipes
Shared aroma: 4'-methylacetophenone (bitter almond).
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Bread + buttertop 3% of all pairsAroma overlapstrongMentioned together27,145 recipes
Shared aroma: delta-decalactone (sweet, creamy).
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Bread + eggtop 6% of all pairsAroma overlapstrongMentioned together22,584 recipes
Shared aroma: (e)-2-octenal (fatty, green).
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Parsley + oniontop 6% of all pairsAroma overlapstrongMentioned together25,834 recipes
Shared aroma: coumarin (sweet, hay).
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Onion + peppertop 6% of all pairsAroma overlapmoderateMentioned together68,463 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
- Cod
- Forms the main body of the dish and cooks to a flaky texture.
- Bread crumbs
- Absorb moisture in the stuffing and form a crisp, golden coating on the surface.
- Egg
- Binds the stuffing together and helps the crumb coating set and brown.
- Butter
- Adds richness and moisture, and helps the top crumbs brown during baking.
- Onions
- Add savory aroma and sweetness to the stuffing as they cook.
The step that matters
Bake until cooked through. Cod is lean and turns dry and tough when overcooked, so it should be checked for doneness and removed once it flakes easily. The stuffing and coating also need enough heat to set and brown.
Flavor stand-ins for the onion
How well each one fits the dish's main ingredients (bread, parsley, pepper, butter, egg):
- Capsicumbetter flavor fit
- Potatobetter flavor fit
- Carrotbetter flavor fit
- Onionthe original
Fit is the average pairing score against bread, parsley, pepper, butter, egg. Candidates are from the same food group and used in at least 100 recipes. This compares flavor only: it does not check the job the ingredient does in the dish (bulk, moisture, acidity, structure).
“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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