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Kidney Omelet

A savory omelet with sautéed sheep's kidney, butter, parsley, and eggs.

From an old cookbook · modernised transcription
From a historical cookbook (Internet Archive) · 7 ingredients
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Why it works: Parsley and pepper match in chemistry and in kitchens. They rank in the top 2% of all ingredient pairs, and cooks put them together in 34,122 recipes. Both carry 4'-methylacetophenone, which smells bitter almond. The science ↓

Kidney Omelet

Ingredients

Directions

Prepare the kidney

  1. Cut the kidney into small pieces.

  2. Melt 1 tablespoon of butter in a saucepan and cook the kidney for 4 minutes.

Make the omelette

  1. In an omelet pan, melt the remaining butter.

  2. In a bowl, beat the eggs and add salt, pepper, and parsley.

  3. Cook the omelet as usual and divide it in half.

Fill, brown and serve

  1. Spread the cooked kidney on one half, place the other half on top, and brown in the oven.

  2. Slide onto a hot plate and serve.

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 + peppertop 2% of all pairs
    Smell alikestrong
    Cooked together34,122 recipes

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

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

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

  3. Butter + parsleytop 15% of all pairs
    Smell alikemoderate
    Cooked together28,563 recipes

    Shared aroma: trans-2-hexenal (green, leafy).

  4. Butter + eggtop 17% of all pairs
    Smell alikemoderate
    Cooked together118,967 recipes

    Shared aroma: decanal (soap, orange peel).

  5. Milk + eggtop 18% of all pairs
    Smell alikemoderate
    Cooked together88,785 recipes

    Shared aroma: 2-nonenal (fatty, green).

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

What each ingredient does

Eggs
Set to form the omelette's structure and body as they cook.
Sheep's kidney
Provides the rich, savoury filling that gives the omelette its main flavour.
Butter
Adds fat for richness and helps the omelette cook without sticking.
Milk or rich gravy
Adds moisture that keeps the omelette soft and tender.

The step that matters

Cooking the omelette before filling. Eggs cooked over too much heat turn tough and dry, and the omelette must be tender enough to fold around the filling without cracking.

Swap the parsley

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

  1. Nutmegfits about as well
  2. Parsleythe original
  3. Cinnamonfits about as well
  4. Tarragonfits less well

Fit is the average pairing score against butter, pepper, milk, egg. 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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