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Mayonnaise Dressing

A creamy dressing made from egg yolks, mustard, oil, vinegar, salt, and cayenne pepper.

From an old cookbook · modernised transcription
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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 ↓

Mayonnaise Dressing

Ingredients

Directions

  1. Mash the yolks of two hard boiled eggs in a bowl.

  2. Add the yolks of two raw eggs and dry mustard.

  3. Season with salt and cayenne pepper to taste.

  4. Slowly pour in salad oil, drop by drop, while stirring continuously.

  5. Finally, mix in one tablespoon of vinegar.

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

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

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

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

  4. Egg + mustardtop 28% of all pairs
    Smell alikemoderate
    Cooked together9,210 recipes

    Shared aroma: (e)-2-octenal (fatty, green).

  5. Egg + vinegartop 33% of all pairs
    Smell alikelow
    Cooked together12,922 recipes

    Shared aroma: acetic acid (sour, vinegar).

Egg and vinegar barely smell alike, yet cooks put them together in 12,922 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

Raw egg yolks
Emulsify the oil and water into a thick, stable sauce.
Hard boiled egg yolks
Add body and richness to the base, helping the sauce hold together.
Salad oil
Provides the fat that gives mayonnaise its smooth, creamy texture.
Vinegar
Adds acidity that brightens the flavor and balances the richness of the oil.

The step that matters

Adding the salad oil. Oil must be added drop by drop while stirring so it disperses into the yolks as tiny droplets. Pouring too fast breaks the emulsion, leaving a greasy, separated dressing.

Swap the mustard

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

  1. Capsicumfits better
  2. Mustardthe original
  3. Cucumberfits about as well
  4. Cabbagefits less well

Fit is the average pairing score against egg, pepper, 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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