Why it works: Butter and mushroom are a kitchen classic. They rank in the top 7% of all ingredient pairs, and cooks put them together in 12,525 recipes. Both carry trans-2-decenal, which smells waxy, orange. The science ↓
Sauce to Broiled Fowl
Ingredients
Directions
Make the sauce base
Fry the sliced onions in butter until soft.
Add the flour to the onions.
Moisten the mixture with the boiling liquid from the fowl.
Stir until smooth.
Remove the onions from the sauce.
Season and add the offal
Season the sauce with pepper, salt, and nutmeg.
Add the fowl's comb and wattles to the sauce.
Add the kidneys, liver, gizzard and brains to the sauce.
Add the pickled mushrooms and pickled mushroom vinegar to the sauce.
Keep warm
Keep the sauce hot in a bain-marie until ready to 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 their aromas overlap, and how often cooks already put them together.
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Butter + mushroomtop 7% of all pairsSmell alikemoderateCooked together12,525 recipes
Shared aroma: trans-2-decenal (waxy, orange).
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Pepper + nutmegtop 7% of all pairsSmell alikestrongCooked together13,015 recipes
Shared aroma: 4'-methylacetophenone (bitter almond).
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Flour + nutmegtop 8% of all pairsSmell alikemoderateCooked together18,623 recipes
Shared aroma: isobutyraldehyde (malty, green).
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Onion + mushroomtop 10% of all pairsSmell alikemoderateCooked together10,626 recipes
Shared aroma: 2,4-decadienal (seaweed).
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Onion + peppertop 11% of all pairsSmell alikemoderateCooked together68,474 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
- Butter
- Fat that softens the onions and carries their flavour into the sauce.
- Flour
- Thickens the boiling liquid into a smooth, spoonable sauce.
- Onions
- Sweetness and savoury depth as they soften in butter.
- Kidneys
- Add rich, meaty body to the sauce as they cook in it.
- Liver
- Adds a deep, rich flavour and a softer texture to the sauce.
- Pickled mushroom vinegar
- Adds acidity that sharpens and balances the rich sauce.
The step that matters
Stir the flour into the onions and liquid until smooth. Flour must be cooked and fully dispersed in the liquid to thicken evenly; lumps form if the liquid is added too fast or unstirred, and the sauce stays gritty.
Swap the nutmeg
How well each one fits the dish's main ingredients (onion, butter, flour, pepper, liver, mushroom, vinegar):
- Thymefits better
- Garlicfits better
- Parsleyfits better
- Nutmegthe original
Fit is the average pairing score against onion, butter, flour, pepper, liver, mushroom, vinegar. 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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