Why it works: Parsley and lemon match in chemistry and in kitchens. They rank in the top 1% of all ingredient pairs, and 14,036 recipes mention both. Both carry beta-phellandrene, which smells minty, terpene. The science ↓
The recipe
Ingredients
Contains: milk, wheat, fish (auto-detected from the ingredients and method; we can miss things, so check labels)
Directions
Prepare the fish
Boil the cod's head and shoulders for about two-thirds of the usual cooking time.
Carefully remove the skin from the fish.
Cook and finish
Place the fish before a brisk fire and baste it well with butter.
Dredge the fish with flour and wait for the froth to rise.
Sprinkle fine bread crumbs over the fish and continue basting until thoroughly cooked.
Serve garnished with fried parsley or scraped horseradish and sliced lemon.
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 + lemontop 1% of all pairsAroma overlapstrongMentioned together14,036 recipes
Shared aroma: beta-phellandrene (minty, terpene).
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Butter + breadtop 3% of all pairsAroma overlapstrongMentioned together27,145 recipes
Shared aroma: delta-decalactone (sweet, creamy).
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Butter + flourtop 6% of all pairsAroma overlaplowMentioned together122,858 recipes
Shared aroma: isobutyraldehyde (malty, green).
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Butter + parsleytop 8% of all pairsAroma overlapmoderateMentioned together28,543 recipes
Shared aroma: trans-2-hexenal (green, leafy).
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Butter + lemontop 8% of all pairsAroma overlapstrongMentioned together41,197 recipes
Shared aroma: 3-hexenal (apple, fruity).
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
- Cod's head and shoulders
- Forms the main body of the dish, providing the flaky fish that is cooked and served.
- Butter
- Bastes the fish, adding moisture and richness while encouraging browning.
- Flour
- Dredged over the fish, it helps form a coating that browns during cooking.
- Fine bread crumbs
- Sprinkled on the fish, they form a crisp, golden crust as it cooks.
The step that matters
Boil for two-thirds of the usual time. Cod cooks quickly and becomes dry and tough if overcooked. Boiling only part of the usual time leaves the fish partly cooked before the basting stage finishes it gently, so the flesh stays 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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