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Kidney Soup

A soup made from beef kidneys, spices, and flour.

From an old cookbook · modernised transcription
From a historical cookbook (Internet Archive) · 3 ingredients
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Why it works: Beef and flour are a kitchen classic. They rank in the top 25% of all ingredient pairs, and cooks put them together in 10,677 recipes. Both carry isobutyraldehyde, which smells malty, green. The science ↓

Kidney Soup

Ingredients

Directions

  1. Wash and cut the beef kidneys into small pieces.

  2. Fry the pieces until they are dark brown.

  3. Boil the fried kidneys with spices to taste.

  4. Thicken the soup with flour.

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. Beef + flourtop 25% of all pairs
    Smell alikelow
    Cooked together10,677 recipes

    Shared aroma: isobutyraldehyde (malty, green).

Beef and flour barely smell alike, yet cooks put them together in 10,677 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

Beef kidneys
Provide the main body and rich, meaty flavor of the soup.
Flour
Thickens the soup as it cooks, giving it a fuller body.

The step that matters

Fry the pieces until they are dark brown. Browning the kidney pieces builds deeper, savory flavors through the Maillard reaction. Frying too briefly leaves a flat taste, while overcooking can make the meat tough and dry.

“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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