Why it works: Sage and pepper match in chemistry and in kitchens. They rank in the top 3% of all ingredient pairs, and cooks put them together in 5,388 recipes. Both carry beta-phellandrene, which smells minty, terpene. The science ↓
Roast Ducks
Ingredients
Directions
The book gives no oven temperature. The 400°F (200°C) in the steps was added when the recipe was transcribed, as a starting point.
Prepare
Hang the ducks for one day in a cool place.
Stuff one duck with chopped onion, sage, salt, and pepper.
Season the inside of the other duck with salt and pepper.
Roast
Place both ducks in the oven at 400°F (200°C) and baste them constantly until cooked through.
A few minutes before serving, dredge the ducks with flour and baste with butter to brown.
Serve
Serve the ducks hot with brown gravy poured around them and apple sauce on the side.
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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Sage + peppertop 3% of all pairsSmell alikestrongCooked together5,388 recipes
Shared aroma: beta-phellandrene (minty, terpene).
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Sage + appletop 10% of all pairsSmell alikemoderateCooked together755 recipes
Shared aroma: 2-hexenal (green, leafy).
-
Onion + peppertop 11% of all pairsSmell alikemoderateCooked together68,474 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
-
Flour + buttertop 12% of all pairsSmell alikelowCooked together124,287 recipes
Shared aroma: isobutyraldehyde (malty, green).
-
Onion + sagetop 12% of all pairsSmell alikemoderateCooked together3,628 recipes
Shared aroma: coumarin (sweet, hay).
Flour and butter 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
What each ingredient does
- Ducks
- The main protein; their fat renders during roasting, keeping the meat moist and the skin crisp.
- Onion
- Adds sweetness and aroma as it cooks inside the stuffed duck.
- Sage
- Adds an aromatic herbal flavor to the stuffing.
- Flour
- Dry coating that helps the skin brown and crisp.
- Butter
- Fat that enriches flavor and promotes browning when basted over the skin.
The step that matters
Dredging and basting just before serving. Flour and butter brown quickly in a hot oven, so they can scorch if left too long. Timing this final step a few minutes before serving gives golden skin without burning the coating.
Swap the apple
How well each one fits the dish's main ingredients (onion, sage, pepper, flour, butter, sauce):
- Lemonfits better
- Limefits better
- Avocadofits better
- Applethe original
Fit is the average pairing score against onion, sage, pepper, flour, butter, sauce. 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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