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Sauce

White Sauce for Fish

A creamy sauce made with butter, flour, milk or stock, seasoned with salt and pepper, folded with sliced eggs and parsley.

From an old cookbook · modernised transcription
From a historical cookbook (Internet Archive) · 7 ingredients
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Why it works: Pepper and parsley 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 ↓

White Sauce for Fish

Ingredients

Directions

The book gives no cooking times; the times in the steps were added in transcription, so check for doneness rather than trusting the clock.

Make the sauce

  1. Melt the butter in a saucepan over medium heat.

  2. Stir in the flour and cook for 1 minute.

  3. Gradually add the milk or stock, stirring constantly until thickened.

  4. Season with salt and pepper.

Finish and serve

  1. Remove from heat and fold in the sliced eggs and chopped 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. Pepper + parsleytop 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 + flourtop 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).

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
Adds richness and flavour to the base of the sauce.
Flour
Thickens the liquid into a smooth sauce as it cooks with the fat.
Milk or white stock
Forms the liquid that the flour thickens into the sauce body.
Hard boiled eggs
Add texture and substance to the finished sauce.

The step that matters

Adding the milk or stock. Adding liquid gradually while stirring constantly keeps the flour dispersed, so the sauce thickens smoothly instead of forming lumps.

Swap the parsley

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

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

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