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Béchamel-sauce

A creamy sauce made from butter, flour, milk, salt, pepper, and nutmeg.

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

Béchamel-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 2 tablespoons of butter in a saucepan over medium heat.

  2. Stir in 2 tablespoons of flour and cook for 2 minutes, stirring constantly.

  3. Gradually whisk in 2 cups of milk until smooth.

  4. Cook until the sauce thickens, about 5-7 minutes.

  5. Season with salt, pepper, and a pinch of nutmeg to taste.

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. Pepper + nutmegtop 7% of all pairs
    Smell alikestrong
    Cooked together13,015 recipes

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

  3. Flour + nutmegtop 8% of all pairs
    Smell alikemoderate
    Cooked together18,623 recipes

    Shared aroma: isobutyraldehyde (malty, green).

  4. Butter + flourtop 12% of all pairs
    Smell alikelow
    Cooked together124,287 recipes

    Shared aroma: isobutyraldehyde (malty, green).

  5. Flour + milktop 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 fat and flavour, and forms the base for the flour to cook into a roux.
Flour
Thickens the sauce as its starch swells in the hot milk mixture.
Milk
Forms the liquid body of the sauce, which thickens as the starch sets.

The step that matters

Cook the flour in the butter before adding milk. Cooking the flour for 2 minutes, stirring constantly, removes its raw taste and helps prevent lumps. Whisking milk in gradually keeps the starch dispersed so the sauce turns smooth rather than clumpy.

Swap the nutmeg

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

  1. Cinnamonfits about as well
  2. Nutmegthe original
  3. Cardamomfits about as well
  4. Parsleyfits about as well

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