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Eel Soup

A soup made from eels simmered with water, bread crust, mace, pepper, onion, sweet herbs, and optionally carrot, finished with cream and flour.

From an old cookbook · modernised transcription
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Why it works: Pepper and carrot match in chemistry and in kitchens. They rank in the top 6% of all ingredient pairs, and cooks put them together in 14,555 recipes. Both carry 2-isopropyl-3-methoxypyrazine, which smells earthy, pea. The science ↓

Eel Soup

Ingredients

Directions

Prepare

  1. Clean the eels and cut them into pieces.

  2. Combine eels, water, bread crust, mace, pepper, onion, and sweet herbs in a pot.

  3. Cover and simmer until the fish is completely broken down.

  4. Strain the mixture to obtain the soup.

Finish and serve

  1. Toast the bread and cut it into dice.

  2. Pour the boiling soup over the toasted bread.

  3. For a richer soup, mix cream with flour and add it before serving.

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. Pepper + carrottop 6% of all pairs
    Smell alikestrong
    Cooked together14,555 recipes

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

  2. Onion + carrottop 6% of all pairs
    Smell alikemoderate
    Cooked together21,601 recipes

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

  3. Pepper + oniontop 11% of all pairs
    Smell alikemoderate
    Cooked together68,474 recipes

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

  4. Carrot + flourtop 13% of all pairs
    Smell alikemoderate
    Cooked together8,029 recipes

    Shared aroma: isobutyraldehyde (malty, green).

  5. Mace + carrottop 15% of all pairs
    Smell alikemoderate
    Cooked together2,592 recipes

    Shared aroma: myristicin (spice, warm).

Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs

What each ingredient does

Eels
Provide the main flesh and body of the soup as they break down during simmering.
Rich cream
Adds richness and a smooth, velvety texture to the finished soup.
Flour
Thickens the cream so it blends into the soup without separating.
Bread
Soaks up the hot soup, giving body and a soft texture when served.

The step that matters

Simmering until the fish is completely broken down. Gentle simmering lets the eel's connective tissue and bones release gelatin and flavour into the liquid. Boiling hard can cloud the broth and leave it greasy.

Swap the carrot

The recipe marks carrot as optional. How well each one fits the dish's main ingredients (bread, mace, pepper, onion, cream, flour):

  1. Leekfits about as well
  2. Potatofits about as well
  3. Capsicumfits about as well
  4. Carrotthe original

Fit is the average pairing score against bread, mace, pepper, onion, cream, flour. 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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