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Soup

Green Turtle Soup

A soup made from green sea turtle meat, bones, and fat, seasoned with herbs, onions, wine and lemon juice.

From an old cookbook · modernised transcription
From a historical cookbook (Internet Archive) · 13 ingredients
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Why it works: Lemon and pepper 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 ↓

Green Turtle Soup

Ingredients

Directions

Prepare the stock

  1. Chop the coarser parts of the turtle, including entrails and bones.

  2. In a large pot, add the chopped turtle parts and 4 quarts of water.

  3. Stew slowly for 4 hours with the herbs, onions, pepper, and salt, ensuring it continues to boil.

  4. Strain the soup and add the finer parts of the turtle and green fat, which has been simmered for 1 hour in 2 quarts of water.

Thicken and add eggs

  1. Thicken the soup with browned flour, return it to the pot, and simmer gently for another hour.

  2. If there are eggs in the turtle, boil them separately for 4 hours and add to the soup before serving.

  3. If not, prepare mock eggs by mixing the yolks of 3 hard-boiled eggs with 1 beaten raw egg and 1 teaspoon of butter to form a paste.

  4. Roll the paste into pellets the size of turtle eggs and boil for 2 minutes before adding to the soup.

Finish and serve

  1. Finally, stir in the lemon juice and wine, beat once, and serve.

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. Lemon + peppertop 3% of all pairs
    Smell alikestrong
    Cooked together27,047 recipes

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

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

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

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

    Shared aroma: isobutyraldehyde (malty, green).

  4. Wine + lemontop 13% of all pairs
    Smell alikelow
    Cooked together6,157 recipes

    Shared aroma: decanal (soap, orange peel).

  5. Wine + buttertop 13% of all pairs
    Smell alikemoderate
    Cooked together8,645 recipes

    Shared aroma: 2-furfurylthiol (coffee, roasted).

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

Turtle
Provides the main body, flavour and richness of the soup.
Browning flour
Thickens the soup, giving it body and a slightly toasted flavour.
Hard-boiled egg yolks
Form a firm, rich paste that makes the mock eggs hold their shape.
Raw egg
Binds the yolk paste so the mock eggs hold together when boiled.
Lemon juice
Adds acidity that brightens the rich soup.

The step that matters

Thicken with browned flour, then simmer gently. Flour must be fully mixed in and cooked gently so it thickens smoothly without lumps or a raw starchy taste. Boiling hard can break the texture and make the soup cloudy.

Swap the onion

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

  1. Shallotfits better
  2. Asparagusfits better
  3. Spinachfits better
  4. Onionthe original

Fit is the average pairing score against wine, lemon, pepper, flour, egg, butter. 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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