Why it works: Potato and onion are a kitchen classic. They rank in the top 3% of all ingredient pairs, and cooks put them together in 9,023 recipes. Both carry 2-isopropyl-3-methoxypyrazine, which smells earthy, pea. The science ↓
Roast Duck with Potato Dressing
Ingredients
Directions
Prepare
Clean, wash, and dry the duck thoroughly.
Rub ½ cup coarse sea salt inside the duck.
Stuff and roast
In a bowl, combine mashed potatoes, chopped onions, summer savory, salt, pepper, butter, and enough cream to moisten.
Stuff the potato mixture into the duck.
Roast the duck, basting often until cooked through.
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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Potato + oniontop 3% of all pairsSmell alikemoderateCooked together9,023 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
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Summer savory + peppertop 7% of all pairsSmell alikemoderateCooked together671 recipes
Shared aroma: estragole (anise, licorice).
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Onion + summer savorytop 7% of all pairsSmell alikestrongCooked together299 recipes
Shared aroma: coumarin (sweet, hay).
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Butter + creamtop 8% of all pairsSmell alikemoderateCooked together41,516 recipes
Shared aroma: delta-dodecalactone (sweet, creamy).
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Potato + peppertop 9% of all pairsSmell alikemoderateCooked together8,305 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
- Duck
- Provides the main meat and rendered fat that bastes and browns the bird as it roasts.
- Mashed potatoes
- Form the bulk of the dressing, giving it body and a soft, starchy texture.
- Onions
- Add savory sweetness and aroma as they soften and cook inside the stuffing.
- Butter
- Adds fat and richness to the dressing and helps it brown lightly.
- Cream
- Adds moisture so the potato stuffing stays soft rather than dry.
- Summer savory
- Contributes a herbal, peppery aroma to the dressing.
The step that matters
Roast the duck, basting often until cooked through.. The stuffing sits inside the bird and heats more slowly than the surface, so it must be fully hot throughout. Regular basting keeps the skin moist and helps it brown evenly while the cavity warms.
Swap the summer savory
How well each one fits the dish's main ingredients (potato, onion, pepper, butter, cream):
- Garlicfits better
- Parsleyfits better
- Thymefits better
- Summer savorythe original
Fit is the average pairing score against potato, onion, pepper, butter, cream. 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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