Why it works: Pepper and lemon 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, fish (auto-detected from the ingredients and method; we can miss things, so check labels)
Directions
The book gives no oven temperature. The 350°F (175°C) in the steps was added when the recipe was transcribed, as a starting point.
Prepare the cod
Soak the cod sounds in warm water with salt and vinegar for 24 hours.
Wash and dry the cod sounds.
Make the sauce
In a stew‑pan, fry the onions in butter until brown.
Mix a small amount of butter with flour and add to the onions with boiling water; stir until smooth.
Add the cod sounds, pepper, salt, white wine, essence of anchovies, and lemon juice; stir well.
Simmer for a few moments, then transfer to a pie dish.
Bake
Cover with pie crust and bake at 350°F (175°C) for one hour.
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 + lemontop 2% of all pairsAroma overlapstrongMentioned together27,039 recipes
Shared aroma: 2-nonenal (fatty, green).
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Butter + white winetop 3% of all pairsAroma overlapstrongMentioned together5,039 recipes
Shared aroma: ethyl octanoate (fruity, wine).
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White wine + lemontop 4% of all pairsAroma overlapmoderateMentioned together3,764 recipes
Shared aroma: myrcene (balsamic, herbaceous).
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Vinegar + white winetop 5% of all pairsAroma overlapstrongMentioned together1,123 recipes
Shared aroma: beta-damascenone (apple, rose).
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Onion + white winetop 5% of all pairsAroma overlapmoderateMentioned together4,426 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 sounds
- Provide the flaky fish that forms the body of the pie.
- Butter
- Adds richness and helps brown the onions for flavour.
- Flour
- Thickens the cooking liquid into a smooth sauce.
- White wine
- Adds acidity and aroma that brighten the rich sauce.
- Onions
- Add sweetness and savoury depth when browned in butter.
- Pie crust
- Encloses the filling and browns in the oven to form a crisp top.
The step that matters
Stirring the flour and butter into the onions. Flour added to hot liquid clumps unless it is blended with fat first and stirred constantly; stirring until smooth gives the sauce an even, thick texture.
Flavor stand-ins for the onion
How well each one fits the dish's main ingredients (vinegar, butter, flour, pepper, white wine, lemon):
- Capsicumbetter flavor fit
- Shallotbetter flavor fit
- Tomatobetter flavor fit
- Onionthe original
Fit is the average pairing score against vinegar, butter, flour, pepper, white wine, lemon. 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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