Why it works: Haddock and sauce match in chemistry and in kitchens. They rank in the top 1% of all ingredient pairs, and cooks put them together in 200 recipes. Both carry ethanol, which smells alcoholic, ethereal. The science ↓
Stewed Haddock with Brown Sauce
Ingredients
Directions
Make the stock
Combine the heads and bones of the fish with the sliced onion, peppercorns, parsley, and mace in a saucepan.
Cover with cold water and bring to a boil, cooking for 20 minutes.
Strain the mixture.
Make the sauce and cook the fish
Melt the butter in a stew pan.
Stir in the flour until nicely browned.
Brush the fillets with beaten egg.
Brown the fillets in the butter on both sides.
Remove the fish from the pan.
Gradually add the strained stock to the pan, stirring continuously.
Replace the fish in the pan and simmer for 15 minutes.
If desired, add ketchup and chili vinegar.
Serve
Arrange the fillets on a serving dish.
Pour the sauce in the center.
Garnish with parsley.
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 their aromas overlap, and how often cooks already put them together.
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Haddock + saucetop 1% of all pairsSmell alikestrongCooked together200 recipes
Shared aroma: ethanol (alcoholic, ethereal).
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Parsley + lemontop 1% of all pairsSmell alikestrongCooked together14,037 recipes
Shared aroma: beta-phellandrene (minty, terpene).
-
Parsley + oniontop 9% of all pairsSmell alikemoderateCooked together25,843 recipes
Shared aroma: 2,4-decadienal (seaweed).
-
Butter + flourtop 12% of all pairsSmell alikelowCooked together124,287 recipes
Shared aroma: isobutyraldehyde (malty, green).
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Parsley + flourtop 12% of all pairsSmell alikemoderateCooked together16,675 recipes
Shared aroma: isobutyraldehyde (malty, green).
Butter and flour barely smell alike, yet cooks put them together in 124,287 recipes: they 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
- Flour
- Browns in the butter and thickens the stock into a smooth brown sauce.
- Butter
- Carries the browning and gives the fillets and sauce a rich flavor.
- Haddock fillets
- Provide the flaky white fish that is browned and then gently simmered in the sauce.
- Haddock heads and bones
- Release gelatin and savory flavor into the stock that forms the sauce base.
The step that matters
Stirring in the stock gradually. Adding liquid slowly while stirring keeps the flour smoothly dispersed, preventing lumps and producing an even, glossy sauce.
Swap the mace
How well each one fits the dish's main ingredients (haddock, parsley, butter, onion, flour, lemon, sauce):
- Capersfits better
- Thymefits better
- Tarragonfits better
- Macethe original
Fit is the average pairing score against haddock, parsley, butter, onion, flour, lemon, sauce. Candidates are from the same food group and used in at least 100 recipes.
“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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