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Duck-giblet Soup

A hearty soup made from duck giblets simmered with water, gravy beef, onions, herbs, lemon, and thickened with butter, flour, and Madeira.

From an old cookbook · modernised transcription
From a historical cookbook (Internet Archive) · 14 ingredients
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Why it works: Lemon and pepper match in chemistry and in kitchens. They rank in the top 3% of all ingredient pairs, and cooks put them together in 27,047 recipes. Both carry trans-2-nonenal, which smells cardboard, fatty. The science ↓

Duck-giblet Soup

Ingredients

Directions

Prepare the broth

  1. Scald the duck giblets, clean them, and cut into 1‑inch pieces.

  2. Put the giblets in a saucepan with water, gravy beef, onions, sweet herbs, and lemon rind.

  3. Simmer until the bones are loose and the gizzard is soft, about 3 hours.

  4. Strain the broth and season with salt, pepper, and cayenne.

Thicken and finish

  1. Brown thin slices of onion in butter, then stir in flour to thicken the soup.

  2. Pour the broth into the stewpan with the thickening and stir for 10 minutes or until it boils.

  3. Skim and strain into a tureen, adding Madeira, ketchup, and lemon juice.

Recipe from a historical cookbook (Internet Archive).

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.

  1. Lemon + peppertop 3% of all pairs
    Smell alikestrong
    Cooked together27,047 recipes

    Shared aroma: trans-2-nonenal (cardboard, fatty).

  2. Beef + oniontop 7% of all pairs
    Smell alikemoderate
    Cooked together17,092 recipes

    Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).

  3. Beef + peppertop 10% of all pairs
    Smell alikemoderate
    Cooked together18,971 recipes

    Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).

  4. Onion + peppertop 11% of all pairs
    Smell alikemoderate
    Cooked together68,474 recipes

    Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).

  5. Butter + flourtop 12% of all pairs
    Smell alikelow
    Cooked together124,287 recipes

    Shared aroma: isobutyraldehyde (malty, green).

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

What each ingredient does

Duck giblets
Provide the main meat and rich flavour that the broth is built on.
Gravy beef
Adds savoury depth to the broth as it simmers for hours.
Flour
Thickens the soup by swelling in the hot liquid to give body.
Madeira
Adds a sweet, fortified wine aroma and richness to the finished soup.
Butter
Carries the onion browning, adding fat and toasted flavour to the base.

The step that matters

Stirring the flour into the thickening. Flour clumps if it hits hot liquid unmixed. Cooking it in butter first and stirring as the broth boils helps it disperse smoothly and thicken evenly.

Swap the lemon

How well each one fits the dish's main ingredients (beef, onion, pepper, butter, flour, ketchup):

  1. Avocadofits about as well
  2. Lemonthe original
  3. Limefits about as well
  4. Raisinfits less well

Fit is the average pairing score against beef, onion, pepper, butter, flour, ketchup. 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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