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Mock Terrapin

A liver dish seasoned with mustard, eggs, wine, and spices, simmered in butter and water.

From an old cookbook · modernised transcription
From a historical cookbook (Internet Archive) · 9 ingredients
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Why it works: Butter and white wine are a kitchen classic. They rank in the top 9% of all ingredient pairs, and cooks put them together in 5,083 recipes. Both carry ethyl octanoate, which smells fruity, wine. The science ↓

Mock Terrapin

Ingredients

Directions

Prepare the liver

  1. Season the liver with coarse sea salt and fry slowly until brown.

  2. Cut the liver into small dice and dredge with flour.

Make the sauce and serve

  1. Add the mustard, chopped eggs, boiling water, pepper, and butter.

  2. Let it boil for 2 to 3 minutes, then add the wine, stirring well to combine.

  3. Serve warm or cold.

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

    Shared aroma: ethyl octanoate (fruity, wine).

  2. Mustard + peppertop 9% of all pairs
    Smell alikemoderate
    Cooked together15,430 recipes

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

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

    Shared aroma: isobutyraldehyde (malty, green).

  4. Mustard + flourtop 13% of all pairs
    Smell alikemoderate
    Cooked together5,066 recipes

    Shared aroma: isobutyraldehyde (malty, green).

  5. White wine + peppertop 15% of all pairs
    Smell alikemoderate
    Cooked together5,433 recipes

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

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

Calf's liver
Forms the meaty base of the dish and browns to add savoury flavour.
Flour
Coats the liver dice so they brown and help thicken the sauce.
Hard-boiled eggs
Add body and a firm, crumbly texture to the mixture.
Butter
Adds richness and a smooth, glossy finish to the sauce.
White wine
Adds acidity that brightens the rich liver and butter.

The step that matters

Browning the liver slowly. Frying over gentle heat lets the surface brown through the Maillard reaction while the inside stays tender. Too much heat can scorch the outside and leave the centre dry and tough.

Swap the mustard

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

  1. Shallotfits better
  2. Chivefits better
  3. Asparagusfits better
  4. Mustardthe original

Fit is the average pairing score against liver, butter, white wine, pepper, egg, 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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