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Parsley Sauce

A simple sauce made with butter, flour, water or milk, salt, and parsley.

From an old cookbook · modernised transcription
From a historical cookbook (Internet Archive) · 5 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 ↓

Parsley Sauce

Ingredients

Directions

Make the sauce

  1. Melt the butter in a pan.

  2. Stir in the flour thoroughly.

  3. Gradually add the water or milk while stirring continuously.

  4. Add the salt and allow to simmer for ten minutes.

Finish and serve

  1. Mix in the parsley and serve.

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. 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. 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).

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 a roux, adding richness and a smooth base.
Flour
Its starch thickens the liquid as it heats, giving the sauce body.
Water or milk
Forms the liquid of the sauce, which thickens as the starch swells.
Parsley
Adds a fresh, herbal aroma and flavour to the finished sauce.

The step that matters

Gradually add the water or milk while stirring continuously. Adding liquid slowly while stirring keeps the flour dispersed, so the starch hydrates evenly and the sauce stays smooth rather than lumpy.

Swap the parsley

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

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

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