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 ↓
Duck Pie
Ingredients
Directions
Prepare a pie using brown gravy, sage, onion, and bread crumbs instead of forcemeat.
Add port wine, catsup, curry or cayenne, and made mustard.
Thicken the mixture with butter rolled in flour.
If using cold poultry or game, ensure they are already cooked.
Form the mixture into a pie with minimal baking.
If using puff pastry, roll it thin and inform the baker to remove it from the oven as soon as the crust is done.
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.
-
Onion + mustardtop 6% of all pairsSmell alikestrongCooked together9,259 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
-
Bread + buttertop 7% of all pairsSmell alikemoderateCooked together27,232 recipes
Shared aroma: delta-decalactone (sweet, creamy).
-
Sage + mustardtop 9% of all pairsSmell alikestrongCooked together372 recipes
Shared aroma: eucalyptol (eucalyptus, herbal).
-
Butter + flourtop 12% of all pairsSmell alikelowCooked together124,287 recipes
Shared aroma: isobutyraldehyde (malty, green).
-
Sage + oniontop 12% of all pairsSmell alikemoderateCooked together3,628 recipes
Shared aroma: coumarin (sweet, hay).
Butter and flour barely smell alike, yet cooks put them together in 124,287 recipes: they work on texture and structure more than aroma.
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
Swap the sage
How well each one fits the dish's main ingredients (onion, bread, port wine, mustard, butter, flour):
- Capersfits better
- Garlicfits better
- Thymefits better
- Sagethe original
Fit is the average pairing score against onion, bread, port wine, mustard, butter, flour. Candidates are from the same food group and used in at least 100 recipes.
You might also like
The free Flavor Lab newsletter: one surprising pairing a week and the molecular reason it works, in 60 seconds. No spam, unsubscribe anytime.
Prefer an account? Create a free account to save pairings and unlock the full chemistry.
Cornbread345 recipes
Bread Pudding336 recipes
Nut Bread109 recipes
Wheat Bread65 recipes