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Sauce

Milk and Egg Sauce

A sauce made from butter, flour, milk, and egg yolk, optionally flavored with vinegar, peel, parsley, oysters, or breadcrumbs.

From an old cookbook · modernised transcription
From a historical cookbook (Internet Archive) · 10 ingredients
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Why it works: Butter and bread are a kitchen classic. They rank in the top 7% of all ingredient pairs, and cooks put them together in 27,232 recipes. Both carry delta-decalactone, which smells sweet, creamy. The science ↓

Milk and Egg Sauce

Ingredients

Directions

Make the sauce

  1. Mix butter and flour in a saucepan.

  2. Add milk and heat while stirring until slightly thickened.

  3. Beat egg yolk with water and mix into the sauce, ensuring it does not boil.

Finish and serve

  1. For fish, add vinegar or lemon juice and grated peel.

  2. For boiled fowls, add chopped oysters.

  3. For macaroni, layer with cheese and pour sauce before baking.

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 + breadtop 7% of all pairs
    Smell alikemoderate
    Cooked together27,232 recipes

    Shared aroma: delta-decalactone (sweet, creamy).

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

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

  3. Milk + breadtop 11% of all pairs
    Smell alikemoderate
    Cooked together11,466 recipes

    Shared aroma: 2-undecenal (sweet).

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

    Shared aroma: isobutyraldehyde (malty, green).

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

    Shared aroma: isobutyraldehyde (malty, green).

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

Butter
Enriches the sauce and carries flavour, giving it a rich, smooth body.
Flour
Thickens the butter and milk into a smooth, lightly bound sauce.
Milk
Forms the liquid base that thickens into the sauce.
Egg yolk
Enriches and thickens the sauce, adding richness and a silky texture when gently heated.

The step that matters

Add the egg yolk without boiling. Egg yolk thickens by gentle heat, but if the sauce boils the proteins scramble and curdle, leaving a grainy texture. Keep the heat low and stir while mixing it in.

Swap the parsley

The recipe marks parsley as optional. How well each one fits the dish's main ingredients (butter, flour, milk, egg, vinegar, oyster, bread):

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

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