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Marrow Balls for Soup

Small balls made from mashed beef marrow, bread, egg yolk, herbs, and spices, cooked in soup.

From an old cookbook · modernised transcription
From a historical cookbook (Internet Archive) · 8 ingredients
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Why it works: Parsley and thyme match in chemistry and in kitchens. They rank in the top 1% of all ingredient pairs, and cooks put them together in 9,057 recipes. Both carry cuminaldehyde, which smells Spicy, cumin. The science ↓

Marrow Balls for Soup

Ingredients

Directions

Make the marrow balls

  1. Remove marrow from beef bones and mash it well.

  2. Mix in the grated bread, egg yolk, chopped parsley, thyme, nutmeg, and salt.

  3. Roll the mixture into small balls, using flour on your hands to prevent sticking.

Cook in the soup

  1. Strain the soup and return it to the pot until it boils.

  2. Slowly drop the marrow balls into the boiling soup.

  3. Boil for ten minutes with the cover off the pot.

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. Parsley + thymetop 1% of all pairs
    Smell alikestrong
    Cooked together9,057 recipes

    Shared aroma: cuminaldehyde (Spicy, cumin).

  2. Parsley + nutmegtop 3% of all pairs
    Smell alikestrong
    Cooked together5,062 recipes

    Shared aroma: 4'-methylacetophenone (bitter almond).

  3. Thyme + nutmegtop 3% of all pairs
    Smell alikestrong
    Cooked together1,907 recipes

    Shared aroma: beta-phellandrene (minty, terpene).

  4. Nutmeg + flourtop 8% of all pairs
    Smell alikemoderate
    Cooked together18,623 recipes

    Shared aroma: isobutyraldehyde (malty, green).

  5. Parsley + flourtop 12% of all pairs
    Smell alikemoderate
    Cooked together16,675 recipes

    Shared aroma: isobutyraldehyde (malty, green).

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

What each ingredient does

Marrow
Provides richness and fat that gives the balls a tender, savory body.
Grated bread
Absorbs moisture and fat, helping the balls hold together while staying soft.
Egg yolk
Binds the mixture so the balls hold their shape during cooking.

The step that matters

Drop the marrow balls into a fully boiling soup. Adding them slowly to already boiling liquid helps the outside set quickly, so the balls hold their shape instead of breaking apart or dissolving into the soup.

Swap the thyme

How well each one fits the dish's main ingredients (beef, bread, egg, parsley, nutmeg, flour):

  1. Marjoramfits better
  2. Cinnamonfits about as well
  3. Capersfits about as well
  4. Thymethe original

Fit is the average pairing score against beef, bread, egg, parsley, nutmeg, 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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