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Fish Soup

A clear fish broth made with a large fish, onion, herbs, and seasonings, served with fried bread and lemon.

From an old cookbook · modernised transcription
From a historical cookbook (Internet Archive) · 10 ingredients
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Why it works: Pepper and lemon 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 ↓

Fish Soup

Ingredients

Directions

Prepare the soup

  1. Clean the fish thoroughly.

  2. Place the fish in a pot with water, using 1 quart of water for each pound of fish.

  3. Add the chopped onion and sweet herbs.

  4. Cook until the fish is done and tasteless.

Finish and serve

  1. Strain the mixture through a colander.

  2. Return the liquid to the pot, add butter, salt, and pepper to taste.

  3. Stir in Worcestershire sauce if desired.

  4. Serve with fried bread squares and lemon slices.

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 + lemontop 3% of all pairs
    Smell alikestrong
    Cooked together27,047 recipes

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

  2. Butter + breadtop 7% of all pairs
    Smell alikemoderate
    Cooked together27,232 recipes

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

  3. Fish + breadtop 10% of all pairs
    Smell alikemoderate
    Cooked together1,668 recipes

    Shared aroma: 2-undecenal (sweet).

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

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

  5. Fish + buttertop 12% of all pairs
    Smell alikemoderate
    Cooked together4,488 recipes

    Shared aroma: (z)-4-heptenal (biscuit, cream).

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

What each ingredient does

Fish
Provides the main flavor and body of the broth as it simmers in water.
Onion
Adds aromatic sweetness and savory depth to the broth.
Butter
Adds fat and richness, rounding out the flavor of the finished soup.

Swap the onion

How well each one fits the dish's main ingredients (fish, butter, pepper, sauce, bread, lemon):

  1. Capsicumfits better
  2. Shallotfits better
  3. Tomatofits better
  4. Onionthe original

Fit is the average pairing score against fish, butter, pepper, sauce, bread, lemon. 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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