Why it works: Shallot and capers match in chemistry and in kitchens. They rank in the top 1% of all ingredient pairs, and 398 recipes mention both. Both carry coumarin, which smells sweet, hay. The science ↓
The recipe
Ingredients
Contains: egg, milk, fish (auto-detected from the ingredients and method; we can miss things, so check labels)
Directions
Prepare the fish
Wash and wipe the fish well.
Place it in a stewpan and season with pepper and salt.
Cook the fish and sauce
Add velouté sauce, white wine, chopped shallots, and bouquet garni.
Simmer slowly until the fish is done, basting occasionally.
Transfer the fish to a dish and keep warm.
Reduce the sauce until you obtain the desired consistency.
Finish the sauce
Remove the herbs, add the egg yolks, work in the butter, and strain through a tamis.
Return the sauce to a smaller stewpan.
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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Shallot + caperstop 1% of all pairsAroma overlapstrongMentioned together398 recipes
Shared aroma: coumarin (sweet, hay).
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Sauce + anchovytop 2% of all pairsAroma overlapstrongMentioned together2,048 recipes
Shared aroma: ethanol (alcoholic, ethereal).
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Shallot + parsleytop 3% of all pairsAroma overlapmoderateMentioned together3,718 recipes
Shared aroma: coumarin (sweet, hay).
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White wine + buttertop 3% of all pairsAroma overlapstrongMentioned together5,039 recipes
Shared aroma: ethyl octanoate (fruity, wine).
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Capers + parsleytop 3% of all pairsAroma overlapmoderateMentioned together1,550 recipes
Shared aroma: coumarin (sweet, hay).
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Codfish
- Forms the main body of the dish, flaking into moist pieces when cooked gently.
- Velouté sauce
- Provides the creamy base that reduces to coat the fish.
- White wine
- Adds acidity and aroma that brighten the sauce as it reduces.
- Egg yolks
- Thicken the sauce and give it a smooth, rich texture.
- Butter
- Adds fat and gloss, enriching the sauce's flavour and mouthfeel.
- Shallots
- Contribute a mild, sweet onion-like aroma to the sauce.
The step that matters
Adding the egg yolks. Egg yolks thicken through gentle heat; if the sauce is too hot when they go in, they can scramble and turn grainy. Keep the heat low and strain afterward to smooth out any lumps.
Flavor stand-ins for the parsley
How well each one fits the dish's main ingredients (sauce, white wine, shallot, butter, egg, anchovy, capers):
- Parsleythe original
- Tarragonabout as good a flavor fit
Fit is the average pairing score against sauce, white wine, shallot, butter, egg, anchovy, capers. 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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