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Schildpadsoep

A Dutch soup made with calf hock or calf's head, beef, bacon, herbs, and a roux thickener.

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Why it works: Thyme and marjoram match in chemistry and in kitchens. They rank in the top 1% of all ingredient pairs, and 2,225 recipes mention both. Both carry terpineol, which smells pine, woody. The science ↓

The recipe

Time3½ hours

Ingredients

Contains: milk, wheat, soy (auto-detected from the ingredients and method; we can miss things, so check labels)

Directions

Make the stock

  1. Let the beef and hock or calf's head simmer for 3½ hours in the water, adding salt to taste.

Make the roux and soup

  1. Slowly sauté the finely chopped bacon with the herbs in the butter.

  2. Add the flour and let the flour and butter brown, but not burn.

  3. Slowly add the hot stock, bringing the mixture to a boil between additions.

  4. Let it simmer for about ½ an hour, pour through a sieve and add the soy or meat drippings.

  5. Add back the meat stripped off the hock or the calf's head and the beef.

Recipe from the Recipes Wiki (Fandom).

This recipe comes from the Recipes Wiki on Fandom and is licensed CC BY-SA 4.0. Our formatting and summaries are shared under the same licence.

Steps grouped into stages for easier reading; the method is the source's own.

Explore the science

The flavor team

The pairs that carry this dish. Each one is judged two ways: how much aroma chemistry they share, and how many recipes mention both.

  1. Thyme + marjoramtop 1% of all pairs
    Aroma overlapstrong
    Mentioned together2,225 recipes

    Shared aroma: terpineol (pine, woody).

  2. Carrot + parsleytop 1% of all pairs
    Aroma overlapstrong
    Mentioned together8,053 recipes

    Shared aroma: myristicin (spice, warm).

  3. Parsley + thymetop 1% of all pairs
    Aroma overlapstrong
    Mentioned together9,057 recipes

    Shared aroma: cuminaldehyde (Spicy, cumin).

  4. Parsley + marjoramtop 1% of all pairs
    Aroma overlapstrong
    Mentioned together1,979 recipes

    Shared aroma: cuminaldehyde (Spicy, cumin).

  5. Carrot + marjoramtop 2% of all pairs
    Aroma overlapstrong
    Mentioned together687 recipes

    Shared aroma: cuminaldehyde (Spicy, cumin).

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

What each ingredient does

Flour
Browned in butter, it thickens the stock into a smooth, rich soup.
Butter
Carries the herbs and bacon flavour and browns with the flour to build depth.
Calf hock or calf's head
Releases gelatin and savoury flavour into the stock, giving the soup body.
Beef
Adds meaty flavour to the stock during the long simmer.
Bacon
Fat and smoky savour that flavours the butter base.

The step that matters

Browning the flour and butter. The roux must brown without burning. Scorched flour gives a bitter taste and dark specks, while underbrowned flour leaves a raw, pasty flavour and weaker thickening.

Flavor stand-ins for the onion

How well each one fits the dish's main ingredients (beef, butter, flour, carrot, parsley, thyme, marjoram):

  1. Potatobetter flavor fit
  2. Parsnipbetter flavor fit
  3. Leekbetter flavor fit
  4. Onionthe original

Fit is the average pairing score against beef, butter, flour, carrot, parsley, thyme, marjoram. Candidates are from the same food group and used in at least 100 recipes. This compares flavor only: it does not check the job the ingredient does in the dish (bulk, moisture, acidity, structure).

“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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