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Mock Turtle Soup

A hearty soup made from calf's head, carrot, onion, cloves, and a butter‑flour roux, finished with lemon, eggs, and Worcestershire sauce.

From an old cookbook · modernised transcription
From a historical cookbook (Internet Archive) · 13 ingredients
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Why it works: Clove and carrot match in chemistry and in kitchens. They rank in the top 5% of all ingredient pairs, and cooks put them together in 5,873 recipes. Both carry cuminaldehyde, which smells Spicy, cumin. The science ↓

Mock Turtle Soup

Ingredients

Directions

Prepare the stock

  1. Skin and clean the calf's head.

  2. Boil the head in cold water with carrot, bay leaf, onion, and cloves.

  3. Remove the head.

  4. Strain the soup.

  5. Continue cooking until reduced to 1 quart.

  6. Set the soup aside to cool.

Make the soup

  1. Melt the butter in a pot.

  2. Whisk in the flour until browned.

  3. Add the strained soup.

  4. Add the tongue from the calf's head, cut into small squares.

Serve

  1. Layer the lemon slices, sliced hard-boiled eggs, lemon juice, Worcestershire sauce, and salt in a soup tureen.

  2. Pour the boiling hot soup over the ingredients.

  3. 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. Clove + carrottop 5% of all pairs
    Smell alikestrong
    Cooked together5,873 recipes

    Shared aroma: cuminaldehyde (Spicy, cumin).

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

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

  3. Carrot + lemontop 9% of all pairs
    Smell alikestrong
    Cooked together3,351 recipes

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

  4. Clove + lemontop 10% of all pairs
    Smell alikestrong
    Cooked together8,150 recipes

    Shared aroma: eucalyptol (eucalyptus, herbal).

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

    Shared aroma: isobutyraldehyde (malty, green).

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

Calf's head
Provides the meat, gelatin and body of the soup as it simmers.
Flour
Browned in butter, it thickens the soup and adds a nutty colour and flavour.
Butter
Carries the browning of the flour and adds richness to the soup base.
Hard-boiled eggs
Add a firm, mild texture and body to the finished soup.
Lemon
Its juice and slices add acidity and a bright, sharp flavour.

The step that matters

Whisk in the flour until browned. Flour browns quickly once it meets hot butter. Cooking it until golden develops flavour and thickens the soup, but scorched flour turns bitter and dark, so it needs steady attention.

Swap the onion

How well each one fits the dish's main ingredients (clove, flour, carrot, butter, lemon, egg, sauce):

  1. Shallotfits better
  2. Leekfits better
  3. Parsnipfits better
  4. Onionthe original

Fit is the average pairing score against clove, flour, carrot, butter, lemon, egg, sauce. 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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