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Sauce

White Sauob

A creamy sauce made with milk, flour, butter, onion, parsley, and egg whites, served over boiled fish.

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

White Sauob

Ingredients

Directions

The book gives no oven temperature. The 400°F (200°C) in the steps was added when the recipe was transcribed, as a starting point.

Make the sauce

  1. In a saucepan, combine milk, flour, butter, onion, and parsley.

  2. Boil for a few minutes until smooth.

  3. Remove from heat and fold in the beaten egg whites.

Serve

  1. Pour the sauce over boiled fish.

  2. If desired, place in the oven at 400°F (200°C) for a few minutes to brown.

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. Onion + parsleytop 9% of all pairs
    Smell alikemoderate
    Cooked together25,843 recipes

    Shared aroma: 2,4-decadienal (seaweed).

  3. Flour + buttertop 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. Milk + flourtop 14% of all pairs
    Smell alikelow
    Cooked together78,219 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, giving it body and a creamy texture.
Flour
Thickens the milk as it heats, giving the sauce its smooth, coating consistency.
Butter
Adds fat and richness, and helps the flour blend smoothly into the milk.
Egg whites
Folded in at the end to add lightness and a softer, airy texture to the sauce.

The step that matters

Boil until smooth. The flour must be cooked long enough to thicken the milk fully and lose its raw starchy taste. Stirring keeps lumps from forming as the starch swells.

Swap the onion

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

  1. Shallotfits better
  2. Chivefits better
  3. Leekfits better
  4. Onionthe original

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