Why it works: Pepper and parsley 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: milk, wheat, fish, shellfish (auto-detected from the ingredients and method; we can miss things, so check labels)
Directions
The book says “a good oven”. The 400°F (200°C) in the steps is the modern equivalent, not the book's own figure.
Prepare the fish
Remove the flesh from the skin and bones of the cooked cod while it is still warm.
Arrange the cod in neat flakes on a plate.
Season and serve
Sprinkle with coarse sea salt and black pepper.
Drizzle with vinegar and garnish with parsley.
If using, pour any cold sauce over the fish.
Optional finish
Optionally, spread bread crumbs or mashed potatoes on top, dot with butter, and brown in a 400°F (200°C) oven.
For variations, add oysters, mussels, cockles, or shrimp, heat gently, 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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Pepper + parsleytop 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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Parsley + potatotop 3% of all pairsAroma overlapstrongMentioned together2,855 recipes
Shared aroma: 4'-methylacetophenone (bitter almond).
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Pepper + potatotop 5% of all pairsAroma overlapstrongMentioned together8,303 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
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Bread + oystertop 5% of all pairsAroma overlapmoderateMentioned together2,544 recipes
Shared aroma: 2-nonenal (fatty, green).
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Cooked cod
- Provides the flaky, tender main body of the dish.
- Vinegar
- Adds acidity that brightens the flavour of the mild fish.
- Butter
- Adds richness and helps the topping brown when baked.
Flavor stand-ins for the potato
The recipe marks potato as optional. How well each one fits the dish's main ingredients (pepper, vinegar, parsley, sauce, bread, butter, oyster):
- Capsicumbetter flavor fit
- Tomatoabout as good a flavor fit
- Shallotabout as good a flavor fit
- Potatothe original
Fit is the average pairing score against pepper, vinegar, parsley, sauce, bread, butter, oyster. 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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