Why it works: Butter and cheese match in chemistry and in kitchens. They rank in the top 3% of all ingredient pairs, and 7,955 recipes mention both. Both carry delta-dodecalactone, which smells sweet, creamy. The science ↓
The recipe
Ingredients
Contains: egg, milk, wheat (auto-detected from the ingredients and method; we can miss things, so check labels)
Directions
Prepare the broth
Boil the macaroni until tender, then drain and keep warm in its pan.
In a saucepan, combine chicken broth, onion, sweet herbs, and black peppercorns; bring to a simmer.
Make the sauce
Melt butter in another saucepan, stir in flour to form a paste, then gradually add the hot chicken broth.
As the sauce thickens, stir in grated cheese, mustard, and salt; continue stirring until creamy.
Remove from heat and stir in cream and beaten egg yolks if using.
Serve
Combine the sauce with the hot macaroni and serve immediately.
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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Butter + cheesetop 3% of all pairsAroma overlapstrongMentioned together7,955 recipes
Shared aroma: delta-dodecalactone (sweet, creamy).
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Butter + creamtop 3% of all pairsAroma overlapstrongMentioned together41,494 recipes
Shared aroma: delta-dodecalactone (sweet, creamy).
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Chicken + oniontop 4% of all pairsAroma overlapmoderateMentioned together17,808 recipes
Shared aroma: gamma-nonanolactone (coconut, sweet).
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Onion + mustardtop 4% of all pairsAroma overlapstrongMentioned together9,243 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
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Cheese + mustardtop 5% of all pairsAroma overlapmoderateMentioned together1,805 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
- Macaroni (in the method)
- Forms the body of the dish, absorbing the sauce as the base of each serving.
- Butter
- Enriches the sauce and carries flavour, forming the base of the roux.
- Flour
- Thickens the sauce by swelling with hot broth to form a smooth, coating texture.
- Grated cheese
- Adds savoury depth and, as it melts, gives the sauce a creamy, cohesive body.
- Egg yolks
- Enrich the sauce and add richness and smoothness when stirred in off the heat.
The step that matters
Stirring the cheese into the thickening sauce. Cheese proteins can clump or turn grainy if the sauce is too hot or boiling. Stirring steadily over gentle heat keeps the emulsion smooth and creamy.
Flavor stand-ins for the mustard
How well each one fits the dish's main ingredients (chicken, onion, butter, flour, cheese, cream, egg):
- Potatobetter flavor fit
- Asparagusbetter flavor fit
- Chiveabout as good a flavor fit
- Mustardthe original
Fit is the average pairing score against chicken, onion, butter, flour, cheese, cream, egg. 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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