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Bechamel Sauce

A creamy sauce made from butter, flour, milk, salt, white pepper, and lemon juice.

From an old cookbook · modernised transcription
From a historical cookbook (Internet Archive) · 6 ingredients
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Bechamel Sauce

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 ↓

Bechamel Sauce

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.

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

  2. Stir in the flour and cook for 1-2 minutes until lightly golden.

  3. Gradually whisk in the milk, stirring constantly until the sauce thickens.

  4. Season with salt and white pepper.

  5. Just before serving, stir in the lemon juice.

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.

Photo for illustrative purposes only · Contact us to use it

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 + milktop 14% of all pairs
    Smell alikelow
    Cooked together78,219 recipes

    Shared aroma: isobutyraldehyde (malty, green).

  4. Milk + lemontop 15% of all pairs
    Smell alikemoderate
    Cooked together19,053 recipes

    Shared aroma: 2-nonenal (fatty, green).

  5. Butter + lemontop 16% of all pairs
    Smell alikemoderate
    Cooked together41,227 recipes

    Shared aroma: 3-hexenal (apple, fruity).

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
Carries the flour and adds richness and a smooth, rounded flavour to the sauce.
All-purpose flour
Forms a roux with the butter that thickens the milk into a smooth sauce.
Milk
Forms the liquid base that the roux thickens into a creamy sauce.
Lemon juice
Adds acidity that brightens the richness of the butter and milk.

The step that matters

Whisking in the milk. Adding the milk too fast or without constant stirring lets lumps of starch form before the sauce thickens. Gradual addition while stirring lets the starch granules disperse evenly and swell into a smooth sauce.

Swap the white pepper

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

  1. Cinnamonfits better
  2. Nutmegfits better
  3. Parsleyfits better
  4. White pepperthe original

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