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Lamb Kidneys a LA Terrapin

Lamb kidneys cooked in a butter, flour, and milk sauce with egg, parsley, salt, and pepper.

From an old cookbook · modernised transcription
From a historical cookbook (Internet Archive) · 8 ingredients
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Why it works: Butter and milk are a kitchen classic. They rank in the top 7% of all ingredient pairs, and cooks put them together in 81,283 recipes. Both carry (z)-4-heptenal, which smells biscuit, cream. The science ↓

Lamb Kidneys a LA Terrapin

Ingredients

Directions

Prepare the kidneys

  1. Cut the lamb kidneys in halves.

  2. Soak in cold water and boil for about 15 minutes.

Make the sauce

  1. In a saucepan, melt butter and mix with flour and milk until smooth.

  2. Cut the kidneys into smaller pieces and add to the sauce with the chopped egg, salt, pepper, and parsley.

  3. Cook in the hot sauce for 2 minutes.

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. Butter + milktop 7% of all pairs
    Smell alikemoderate
    Cooked together81,283 recipes

    Shared aroma: (z)-4-heptenal (biscuit, cream).

  2. Lamb + parsleytop 11% of all pairs
    Smell alikemoderate
    Cooked together1,322 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. Flour + parsleytop 12% of all pairs
    Smell alikemoderate
    Cooked together16,675 recipes

    Shared aroma: isobutyraldehyde (malty, green).

  5. White pepper + parsleytop 14% of all pairs
    Smell alikelow
    Cooked together1,451 recipes

    Shared aroma: myrcene (balsamic, herbaceous).

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

Lamb kidneys
The main ingredient, cooked briefly in the sauce so it stays tender.
Butter
Adds fat and richness to the sauce and carries flavor.
Flour
Thickens the milk into a smooth, cohesive sauce.
Milk
Forms the liquid base of the sauce.
Hard-boiled egg
Adds body and a soft, rich texture to the sauce.

The step that matters

Cook the kidneys in the hot sauce for only 2 minutes. Kidney is muscle tissue, and prolonged heat squeezes out moisture and toughens its proteins. A short cook in the sauce keeps the kidneys tender.

Swap the white pepper

How well each one fits the dish's main ingredients (lamb, butter, flour, milk, egg, parsley):

  1. Nutmegfits better
  2. Cinnamonfits better
  3. Capersfits better
  4. White pepperthe original

Fit is the average pairing score against lamb, butter, flour, milk, egg, parsley. 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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