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Eel Soup, Brown

A soup made with eels, onions, flour, and stock, thickened with flour and served with toasted bread.

From an old cookbook · modernised transcription
From a historical cookbook (Internet Archive) · 10 ingredients
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Why it works: Bread and butter are a kitchen classic. They rank in the top 7% of all ingredient pairs, and cooks put them together in 27,232 recipes. Both carry delta-decalactone, which smells sweet, creamy. The science ↓

Eel Soup, Brown

Ingredients

Directions

Prepare the eels

  1. Coat the eels in flour, bread crumbs, or batter, then fry them.

  2. Open the eels, remove the bones, and set them aside.

Make the soup

  1. Fry the chopped onions in butter until brown.

  2. Add flour to the onions to thicken the soup.

  3. Stir in water or stock gradually, seasoning to taste.

  4. Add the eels and white wine, if using.

  5. Bring to a boil, then serve with toasted or fried bread dice.

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. Bread + buttertop 7% of all pairs
    Smell alikemoderate
    Cooked together27,232 recipes

    Shared aroma: delta-decalactone (sweet, creamy).

  2. Butter + white winetop 9% of all pairs
    Smell alikemoderate
    Cooked together5,083 recipes

    Shared aroma: ethyl octanoate (fruity, wine).

  3. Flour + buttertop 12% of all pairs
    Smell alikelow
    Cooked together124,287 recipes

    Shared aroma: isobutyraldehyde (malty, green).

  4. Onion + white winetop 12% of all pairs
    Smell alikemoderate
    Cooked together4,535 recipes

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

  5. Onion + buttertop 15% of all pairs
    Smell alikemoderate
    Cooked together42,912 recipes

    Shared aroma: decanal (soap, orange peel).

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

Eels
Form the main body of the soup, providing the protein and rich flavor.
Flour
Thickens the soup as it cooks in the butter and onions, giving it body.
Onions
Caramelize when browned in butter, adding sweetness and depth to the broth.
Butter
Fat for frying the onions and eels, adding richness and browning.
White wine
Adds acidity and aroma to the soup, lifting the flavor of the broth.

The step that matters

Fry the chopped onions in butter until brown. Browning the onions develops deep, sweet, savory flavors through the Maillard reaction and caramelization. Stopping early leaves the soup pale and flat-tasting.

Swap the onion

How well each one fits the dish's main ingredients (flour, bread, butter, white wine):

  1. Shallotfits better
  2. Leekfits better
  3. Chivefits about as well
  4. Onionthe original

Fit is the average pairing score against flour, bread, butter, white wine. 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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