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Hollandaise Sauce

A sauce made by whisking butter, egg yolks, salt, pepper, boiling water, and lemon juice over a hot water bath.

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 cooks put them together in 27,047 recipes. Both carry trans-2-nonenal, which smells cardboard, fatty. The science ↓

Hollandaise Sauce

Ingredients

Directions

Make the base

  1. Cream half cup butter.

  2. Beat in the yolk of four eggs, one at a time.

  3. Add one-fourth teaspoon each of salt and pepper, and half a cup of boiling water.

Cook and finish

  1. Stir and cook the mixture over hot water until it thickens.

  2. Add the juice of half a lemon and serve at once.

Nutrition, whole recipe (rough)

198Calories
7 gProtein
17 gFat
6 gCarbs

Counts 5 of 6 ingredients. The other 1 aren't in our nutrition table and add nothing above, so the real totals are higher.

What these numbers assume: 5 portions
IngredientPortion assumedkcal
Butter1 tbsp (14g)102
Egg1 large egg (50g)78
Lemonjuice of 1 lemon (48ml)12
Black Pepper1 tsp ground (2.3g)6
Salt1 tsp (6g)0
Waternot in our table0

One typical portion per ingredient; the recipe's quantities are not counted. A rough guide only, not for medical or dietary planning.

By Mary Elizabeth Lyles Wilson (1860–1924). 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. See the original page.

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. Lemon + peppertop 3% of all pairs
    Smell alikestrong
    Cooked together27,047 recipes

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

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

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

  3. Butter + eggtop 17% of all pairs
    Smell alikemoderate
    Cooked together118,967 recipes

    Shared aroma: decanal (soap, orange peel).

  4. Egg + lemontop 19% of all pairs
    Smell alikelow
    Cooked together44,316 recipes

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

  5. Butter + peppertop 21% of all pairs
    Smell alikemoderate
    Cooked together85,593 recipes

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

Egg and lemon barely smell alike, yet cooks put them together in 44,316 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

Eggs
Egg yolks emulsify the butter and thicken the sauce as they gently cook.
Butter
Provides fat for a rich flavor and a smooth, velvety texture.
Lemon
Adds acidity that brightens the rich, buttery sauce.

The step that matters

Cooking over hot water until it thickens. Egg yolks thicken at gentle heat but scramble if the mixture gets too hot or cooks too fast. Keeping the water below a hard boil and stirring constantly gives a smooth sauce instead of curdled bits.

“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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