Why it works: Mustard and onion match in chemistry and in kitchens. They rank in the top 6% of all ingredient pairs, and cooks put them together in 9,259 recipes. Both carry 2-isopropyl-3-methoxypyrazine, which smells earthy, pea. The science ↓
Ragout of Cold Duck or Turkey
Ingredients
Directions
Prepare the stock
Cut up the remains of cold duck, turkey, or chicken.
Make a little stock using the bones.
Flavor the stock with cayenne pepper, mustard, and tomato sauce.
Make the ragout
In a pan, fry the chopped onion in boiling butter or fat until soft.
Mix the fried onion with the stock and thicken with brown flour.
Bring the mixture to a boil and add the pieces of cold meat.
Allow to simmer for 15 minutes until thoroughly warm.
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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Mustard + oniontop 6% of all pairsSmell alikestrongCooked together9,259 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
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Pepper + tomatotop 7% of all pairsSmell alikemoderateCooked together17,923 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
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Tomato + oniontop 8% of all pairsSmell alikemoderateCooked together20,633 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
-
Pepper + mustardtop 9% of all pairsSmell alikemoderateCooked together15,430 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
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Pepper + oniontop 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
- Cold duck, turkey, or chicken
- Provides the main meat, which is already cooked and only needs warming through.
- Brown flour
- Starch that thickens the stock into a cohesive sauce as it heats.
- Butter or fat
- Softens the onion and carries its flavor into the sauce as fat.
- Onion
- Adds savory sweetness and aroma when softened in fat.
- Tomato sauce
- Adds acidity and savory depth to the stock.
The step that matters
Thickening with brown flour. Flour must be mixed in smoothly with the stock and cooked through; added lumpy or without enough heat, it leaves raw floury taste and uneven thickness.
Swap the tomato
How well each one fits the dish's main ingredients (turkey, meat, pepper, mustard, sauce, onion, butter):
- Shallotfits better
- Horseradishfits better
- Capsicumfits better
- Tomatothe original
Fit is the average pairing score against turkey, meat, pepper, mustard, sauce, onion, butter. 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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