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Boiled Dressing

A boiled dressing made with salt, egg yolk, mustard, butter, cayenne pepper, cream, and vinegar.

From an old cookbook · modernised transcription
From a historical cookbook (Internet Archive) · 7 ingredients
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Why it works: Mustard and vinegar are a kitchen classic. They rank in the top 7% of all ingredient pairs, and cooks put them together in 14,067 recipes. Both carry isobutyraldehyde, which smells malty, green. The science ↓

Boiled Dressing

Ingredients

Directions

Make the base

  1. In a bowl, combine salt, egg yolk, mustard, melted butter, and cayenne pepper.

  2. Add vinegar very slowly while stirring.

Cook and cool

  1. Cook the mixture over boiling water, stirring constantly until it thickens.

  2. Strain the dressing and let it cool.

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. Mustard + vinegartop 7% of all pairs
    Smell alikemoderate
    Cooked together14,067 recipes

    Shared aroma: isobutyraldehyde (malty, green).

  2. Butter + creamtop 8% of all pairs
    Smell alikemoderate
    Cooked together41,516 recipes

    Shared aroma: delta-dodecalactone (sweet, creamy).

  3. Mustard + peppertop 9% of all pairs
    Smell alikemoderate
    Cooked together15,430 recipes

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

  4. Pepper + vinegartop 14% of all pairs
    Smell alikemoderate
    Cooked together27,814 recipes

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

  5. Egg + buttertop 17% of all pairs
    Smell alikemoderate
    Cooked together118,967 recipes

    Shared aroma: decanal (soap, orange peel).

Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs

What each ingredient does

Egg yolk
Thickens when gently heated and helps bind the butter and vinegar into a smooth dressing.
Melted butter
Adds fat for richness and a smooth, creamy mouthfeel.
Vinegar
Adds acidity that brightens the dressing and balances the richness of the yolk and butter.
Mustard
Adds sharp flavor and helps stabilize the emulsion of yolk and fat.

The step that matters

Cook over boiling water while stirring constantly. Egg yolk thickens through gentle heat, but it can scramble if it overheats or sits still. Constant stirring spreads the heat evenly and keeps the sauce smooth as it thickens.

Swap the mustard

How well each one fits the dish's main ingredients (egg, butter, pepper, cream, vinegar):

  1. Capsicumfits about as well
  2. Potatofits about as well
  3. Mustardthe original
  4. Spinachfits about as well

Fit is the average pairing score against egg, butter, pepper, cream, vinegar. 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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