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Yellow Bechamel Sauce

A creamy sauce made with flour, butter, stock, milk, egg yolks, asparagus tips, salt, cayenne pepper, and lemon juice.

From an old cookbook · modernised transcription
From a historical cookbook (Internet Archive) · 9 ingredients
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Why it works: Pepper and lemon match in chemistry and in kitchens. They rank in the top 3% of all ingredient pairs, and cooks put them together in 27,047 recipes. Both carry trans-2-nonenal, which smells cardboard, fatty. The science ↓

Yellow Bechamel Sauce

Ingredients

Directions

  1. Mix flour and butter in a saucepan, then cook until it bubbles.

  2. Gradually add hot stock and milk, stirring continuously.

  3. Once the sauce boils, place the saucepan in a dish of hot water.

  4. Stir in the beaten egg yolks, asparagus tips, salt, cayenne pepper, and 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.

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 + lemontop 3% of all pairs
    Smell alikestrong
    Cooked together27,047 recipes

    Shared aroma: trans-2-nonenal (cardboard, fatty).

  2. Asparagus + lemontop 6% of all pairs
    Smell alikemoderate
    Cooked together704 recipes

    Shared aroma: trans-2-nonenal (cardboard, fatty).

  3. Butter + milktop 7% of all pairs
    Smell alikemoderate
    Cooked together81,283 recipes

    Shared aroma: (z)-4-heptenal (biscuit, cream).

  4. Asparagus + peppertop 10% of all pairs
    Smell alikemoderate
    Cooked together1,968 recipes

    Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).

  5. Flour + buttertop 12% of all pairs
    Smell alikelow
    Cooked together124,287 recipes

    Shared aroma: isobutyraldehyde (malty, green).

Flour and butter 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

Flour
Thickens the butter and liquid into a smooth sauce body.
Butter
Forms the roux with flour and adds richness to the sauce.
Egg yolks
Enrich and thicken the sauce as they gently set with heat.
Lemon juice
Adds acidity that brightens the rich sauce.

The step that matters

Stir in the egg yolks off direct heat. Egg yolks thicken by gentle setting; in a hot water bath the sauce stays warm enough to thicken without curdling. Overheating causes the yolk proteins to scramble, leaving a grainy texture.

Swap the asparagus

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

  1. Asparagusthe original
  2. Shallotfits about as well
  3. Capsicumfits about as well
  4. Spinachfits about as well

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