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Sauce

Hollandaise Sauce

A sauce made from butter, flour, water, egg yolks, lemon juice, and cayenne pepper.

From an old cookbook · modernised transcription
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Why it works: Lemon and pepper match in chemistry and in kitchens. They rank in the top 3% of all ingredient pairs, and 27,047 recipes mention both. Both carry trans-2-nonenal, which smells cardboard, fatty. The science ↓

Hollandaise Sauce

Ingredients

Directions

Make the sauce

  1. Melt the butter in a saucepan.

  2. Stir in the flour until well combined.

  3. Add the water and bring to a boil.

  4. Stir in the egg yolks and cook for a moment.

  5. Add the lemon juice and cayenne pepper.

Serve

  1. Serve with fish or vegetables.

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 aroma chemistry they share, and how many recipes mention both.

  1. Lemon + peppertop 3% of all pairs
    Aroma overlapstrong
    Mentioned together27,047 recipes

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

  2. Butter + flourtop 12% of all pairs
    Aroma overlaplow
    Mentioned together124,287 recipes

    Shared aroma: isobutyraldehyde (malty, green).

  3. Flour + eggtop 15% of all pairs
    Aroma overlaplow
    Mentioned together106,462 recipes

    Shared aroma: isobutyraldehyde (malty, green).

  4. Butter + lemontop 16% of all pairs
    Aroma overlapmoderate
    Mentioned together41,227 recipes

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

  5. Flour + lemontop 17% of all pairs
    Aroma overlapmoderate
    Mentioned together30,404 recipes

    Shared aroma: isobutyraldehyde (malty, green).

Butter and flour share little aroma chemistry, yet 124,287 recipes mention both: they likely 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
Provides fat and richness, carrying flavor and giving the sauce a smooth mouthfeel.
Flour
Thickens the melted butter into a roux that gives the sauce body.
Egg yolks
Emulsify the butter and water and thicken the sauce as they gently set with heat.
Lemon juice
Adds acidity that brightens the rich butter and egg flavors.

The step that matters

Stirring in the egg yolks. Egg yolks thicken through gentle heat, but too much heat scrambles them into lumps. Keep the heat low and stir constantly so the yolks blend smoothly into the sauce.

“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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