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Ox Kidneys

A sautéed ox kidney dish cooked with butter, flour, sherry, and optional aromatics.

From an old cookbook · modernised transcription
From a historical cookbook (Internet Archive) · 10 ingredients
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Why it works: Flour and shallot match in chemistry and in kitchens. They rank in the top 6% of all ingredient pairs, and cooks put them together in 2,081 recipes. Both carry isobutyraldehyde, which smells malty, green. The science ↓

Ox Kidneys

Ingredients

Directions

Prepare

  1. Cut the ox kidney into slices about the size of a half crown piece and double the thickness, avoiding the tough white part.

  2. Heat the butter in a stewpan until very hot but not black.

Cook

  1. Add the kidney slices and stir for 3 minutes over a brisk fire.

  2. For each pound of kidney, add flour, salt, pepper, and sugar.

  3. Moisten with water and sherry, add browning if desired, and let simmer gently for 5 minutes, stirring occasionally.

  4. If the mixture is too thick, add a few drops more water.

Serve

  1. Serve hot on a dish.

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. Flour + shallottop 6% of all pairs
    Smell alikestrong
    Cooked together2,081 recipes

    Shared aroma: isobutyraldehyde (malty, green).

  2. Pepper + shallottop 11% of all pairs
    Smell alikemoderate
    Cooked together5,898 recipes

    Shared aroma: 2,4-decadienal (seaweed).

  3. Butter + flourtop 12% of all pairs
    Smell alikelow
    Cooked together124,287 recipes

    Shared aroma: isobutyraldehyde (malty, green).

  4. Butter + sherrytop 14% of all pairs
    Smell alikemoderate
    Cooked together3,505 recipes

    Shared aroma: ethyl octanoate (fruity, wine).

  5. Flour + sugartop 15% of all pairs
    Smell alikemoderate
    Cooked together92,116 recipes

    Shared aroma: phenylacetaldehyde (hawthorne, honey).

Butter and flour 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

Ox kidney
Provides the main meat, which is firmed and browned by the quick initial frying.
Butter
Fat that browns the kidney slices and carries flavour into the sauce.
Flour
Thickens the cooking liquid into a sauce that coats the kidney slices.
Sherry
Adds acidity and aroma, and helps lift the flavour of the pan juices.

The step that matters

Searing the kidney over a brisk fire. Heat browns the surface quickly through the Maillard reaction, building flavour. If the pan is too cool or the slices are crowded, they steam and turn grey and tough, and kidney overcooked this way becomes rubbery.

Swap the shallot

The recipe marks shallot as optional. How well each one fits the dish's main ingredients (butter, flour, pepper, sugar, sherry):

  1. Capsicumfits better
  2. Arrowrootfits about as well
  3. Shallotthe original
  4. Leekfits about as well

Fit is the average pairing score against butter, flour, pepper, sugar, sherry. 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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