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Sauce

Parsley Sauce

A sauce made with butter, flour, water, parsley, pepper, and salt.

From an old cookbook · modernised transcription
From a historical cookbook (Internet Archive) · 6 ingredients
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Why it works: Parsley and pepper 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 ↓

Parsley Sauce

Ingredients

Directions

Prepare the parsley

  1. Remove dead leaves and stalks from the parsley, then wash and dry it thoroughly.

  2. Chop the parsley very finely.

Make the sauce

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

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

  3. Gradually add the water, stirring constantly until the sauce thickens.

  4. Add the chopped parsley, pepper, and salt, and mix well.

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. Parsley + peppertop 2% of all pairs
    Smell alikestrong
    Cooked together34,122 recipes

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

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

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

  5. Flour + peppertop 19% of all pairs
    Smell alikemoderate
    Cooked together50,459 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
Melts with the flour to form the base of the sauce and adds richness.
Flour
Thickens the sauce when cooked with the butter and then the water.
Water
Forms the liquid body of the sauce as it thickens with the roux.
Parsley
Provides the fresh, green flavour and colour of the finished sauce.

The step that matters

Gradually add the water, stirring constantly. Adding liquid slowly while stirring lets the starch in the flour disperse evenly and swell smoothly. Adding it all at once can trap lumps of raw flour that are hard to remove.

Swap the parsley

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

  1. Parsleythe original
  2. Turmericfits about as well
  3. Nutmegfits about as well
  4. Sagefits less well

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