Why it works: Onion and mustard 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 ↓
Roast Pheasant with Mushrooms
Ingredients
Directions
Prepare the pheasant
Pluck, singe, draw, and lard the pheasant.
Roughly chop the mushrooms and mix them with 2 ounces of butter, seasoning with salt and cayenne.
Stuff the pheasant with the mushroom mixture, truss it, and cover it with thickly buttered paper.
Roast
Roast the pheasant for about 40 minutes.
Remove the paper and brown the pheasant.
Make the gravy and serve
For the gravy, heat the remaining butter and fry the minced onion until brown.
Add the flour and brown it, then add the chopped liver of the pheasant, salt, sugar, mustard, and stock.
Boil, then simmer for 30 minutes, strain, and add the drippings from the pheasant.
Serve the gravy in a tureen.
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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Onion + mustardtop 6% of all pairsSmell alikestrongCooked together9,259 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
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Mushroom + buttertop 7% of all pairsSmell alikemoderateCooked together12,525 recipes
Shared aroma: trans-2-decenal (waxy, orange).
-
Mustard + peppertop 9% of all pairsSmell alikemoderateCooked together15,430 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
-
Mushroom + oniontop 10% of all pairsSmell alikemoderateCooked together10,626 recipes
Shared aroma: 2,4-decadienal (seaweed).
-
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
- Mushrooms
- Add moisture and savoury flavour to the stuffing as they cook inside the bird.
- Butter
- Adds richness and helps the skin and paper-wrapped surface brown during roasting.
- Flour
- Thickens the gravy as it browns with the butter and onion.
- Made mustard
- Adds sharpness that balances the richness of the butter and drippings.
- Stock
- Forms the liquid base of the gravy, carrying flavour from the liver and drippings.
The step that matters
Remove the paper and brown the pheasant. The buttered paper keeps the bird moist early on, so the surface needs enough time uncovered to brown. Browning is a dry-heat reaction that gives the roast its colour and flavour.
Swap the onion
How well each one fits the dish's main ingredients (pheasant, mushroom, mustard, flour, butter, pepper, sugar):
- Shallotfits better
- Chivefits better
- Spinachfits better
- Onionthe original
Fit is the average pairing score against pheasant, mushroom, mustard, flour, butter, pepper, sugar. 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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