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Sauce

Hollandaise Sauce

A creamy sauce made from butter, egg yolks, salt, pepper, boiling water, and lemon juice.

From an old cookbook · modernised transcription
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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 27,047 recipes mention both. Both carry trans-2-nonenal, which smells cardboard, fatty. The science ↓

Hollandaise Sauce

Ingredients

Directions

Make the emulsion

  1. Cream together the butter and egg yolks.

  2. Add salt and pepper.

  3. Stir in the boiling water until the mixture thickens.

Finish and serve

  1. Just before serving, add 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.

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. Pepper + lemontop 3% of all pairs
    Aroma overlapstrong
    Mentioned together27,047 recipes

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

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

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

  3. Butter + eggtop 17% of all pairs
    Aroma overlapmoderate
    Mentioned together118,967 recipes

    Shared aroma: decanal (soap, orange peel).

  4. Egg + lemontop 19% of all pairs
    Aroma overlaplow
    Mentioned together44,316 recipes

    Shared aroma: (e,e)-2,4-decadienal (fatty, deep fried).

  5. Butter + peppertop 21% of all pairs
    Aroma overlapmoderate
    Mentioned together85,593 recipes

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

Egg and lemon share little aroma chemistry, yet 44,316 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
Adds fat and richness, giving the sauce a smooth, silky mouthfeel.
Egg yolks
Act as the emulsifier and thicken as they heat, holding the sauce together.
Boiling water
Adds moisture and heat that help the yolks thicken into a looser sauce.
Lemon juice
Adds acidity and brightness that balance the richness of the butter.

The step that matters

Stir in the boiling water until the mixture thickens. Egg yolks thicken when heated, but too much heat makes them scramble. Keeping the mixture moving and adding the hot water gradually lets the yolks set into a smooth 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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