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 with 2 ounces of butter; season with salt and cayenne.
Stuff the pheasant with the mushroom mixture, truss it, and cover with thickly buttered paper.
Roast and brown
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 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
- Pheasant
- Is the main protein, roasted whole and stuffed, with its liver used in the gravy.
- Mushrooms
- Add moisture and earthy flavour as a stuffing that cooks inside the bird.
- Butter
- Adds fat and richness, and browns the paper-covered bird and the gravy roux.
- Flour
- Thickens the gravy as it browns with the butter and onion.
- Made mustard
- Adds sharp, pungent flavour that balances the richness of the gravy.
The step that matters
Browning the flour for the gravy. Flour cooked in butter must brown gently until nutty and fully cooked; if it is undercooked the gravy tastes raw and pasty, and if it burns it turns bitter. Adding the stock afterward then thickens the gravy smoothly.
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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