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Sauce

White Sauce for French Eggs

A white sauce made with flour, butter, boiling milk, vinegar, salt, and parsley, used for French eggs.

From an old cookbook · modernised transcription
From a historical cookbook (Internet Archive) · 6 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 ↓

White Sauce for French Eggs

Ingredients

Directions

Make the sauce

  1. Mix the flour and butter until smooth.

  2. Pour in boiling milk until the sauce reaches the desired consistency.

  3. Add vinegar and salt to taste.

Serve

  1. Garnish the dish with parsley.

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

    Shared aroma: isobutyraldehyde (malty, green).

  3. Flour + parsleytop 12% of all pairs
    Smell alikemoderate
    Cooked together16,675 recipes

    Shared aroma: isobutyraldehyde (malty, green).

  4. Flour + milktop 14% of all pairs
    Smell alikelow
    Cooked together78,219 recipes

    Shared aroma: isobutyraldehyde (malty, green).

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

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

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

Flour
Thickens the milk into a smooth sauce as it cooks with the butter.
Butter
Forms a roux with the flour and adds richness to the sauce.
Milk
Forms the liquid base that thickens into the sauce body.

The step that matters

Pour in the boiling milk gradually. Adding hot milk slowly to the flour and butter mixture lets the starch swell evenly, preventing lumps and giving a smooth sauce. Stop once the desired consistency is reached, since the sauce thickens further as it cools.

Swap the parsley

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

  1. Cinnamonfits better
  2. Tarragonfits better
  3. Jalapenofits better
  4. Parsleythe original

Fit is the average pairing score against flour, butter, milk, vinegar. 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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