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To Make a Strong Fish Gravy

A thickened fish gravy made from eels, herbs, mace, pepper, lemon peel, butter, and flour.

From an old cookbook · modernised transcription
From a historical cookbook (Internet Archive) · 9 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 ↓

To Make a Strong Fish Gravy

Ingredients

Directions

Prepare the eels

  1. Skin, gut, and wash the eels, then cut them into small pieces.

  2. Place the eel pieces in a saucepan and cover with water.

Make the broth

  1. Add the toasted bread, mace, whole pepper, sweet herbs, and lemon peel.

  2. Boil the mixture until it becomes rich.

Make the gravy and serve

  1. In another saucepan, melt the butter.

  2. Add flour to the melted butter and stir until brown.

  3. Strain the eel mixture into the butter and flour mixture.

  4. Let it boil for a few minutes 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 + lemontop 3% of all pairs
    Smell alikestrong
    Cooked together27,047 recipes

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

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

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

  3. Lemon + walnuttop 10% of all pairs
    Smell alikestrong
    Cooked together2,149 recipes

    Shared aroma: 2-nonenal (fatty, green).

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

    Shared aroma: isobutyraldehyde (malty, green).

  5. Walnut + flourtop 12% of all pairs
    Smell alikemoderate
    Cooked together5,873 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

Eels
Provide the main protein and rich flavour that the gravy is built on.
Flour
Cooked with melted butter, it thickens the liquid into a gravy.
Butter
Adds fat and richness, and carries the flour as it browns.

The step that matters

Stirring the flour into the butter until brown. Flour cooked in fat forms a roux that thickens the gravy. Stirring keeps it from scorching, and browning adds a nutty, deeper flavour. Scorched flour turns bitter and cannot be rescued.

Swap the mace

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

  1. Parsleyfits better
  2. Sagefits better
  3. Marjoramfits better
  4. Macethe original

Fit is the average pairing score against bread, pepper, lemon, butter, walnut, 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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