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French Eggs

A custard sauce of milk, flour, butter, and egg yolks served over halved hard‑boiled eggs.

From an old cookbook · modernised transcription
From a historical cookbook (Internet Archive) · 8 ingredients
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Why it works: Milk and butter 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 ↓

French Eggs

Ingredients

Directions

Make the sauce

  1. Heat the milk in a saucepan until it boils.

  2. Dissolve the flour in a small amount of milk, then add it to the boiling milk and stir well.

  3. Add pepper, salt, and butter, stirring until combined.

  4. Beat the egg yolks with vinegar in a bowl.

  5. Pour the yolk mixture into the sauce and cook for 2 minutes, stirring gently.

Assemble and serve

  1. Cut the hard-boiled eggs in half and arrange them in the center of a dish.

  2. Pour the prepared sauce over the eggs and serve hot.

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. Milk + buttertop 7% of all pairs
    Smell alikemoderate
    Cooked together81,283 recipes

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

  2. Flour + buttertop 12% of all pairs
    Smell alikelow
    Cooked together124,287 recipes

    Shared aroma: isobutyraldehyde (malty, green).

  3. Pepper + vinegartop 14% of all pairs
    Smell alikemoderate
    Cooked together27,814 recipes

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

  4. Milk + flourtop 14% of all pairs
    Smell alikelow
    Cooked together78,219 recipes

    Shared aroma: isobutyraldehyde (malty, green).

  5. Flour + eggtop 15% of all pairs
    Smell alikelow
    Cooked together106,462 recipes

    Shared aroma: isobutyraldehyde (malty, green).

Flour and butter 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

Milk
Forms the liquid base of the sauce, which thickens as it cooks.
Flour
Thickens the milk into a smooth sauce body.
Egg yolks
Enrich the sauce and thicken it as they gently cook.
Butter
Adds fat for richness and a smooth, glossy texture.
Hard boiled eggs
Form the solid base of the dish, held in the sauce.

The step that matters

Adding the yolk mixture to the sauce. Egg yolks can curdle or scramble if they get too hot too fast. Cooking gently while stirring keeps the sauce smooth and lets the yolks thicken it evenly.

“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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