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Mayonnaise Dressing

A cold egg yolk-based dressing thickened with oil, vinegar, mustard, salt, and 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. Combine yolks of 4 fresh raw eggs and 2 hard-boiled yolks in a cold bowl.

  2. Whisk until smooth.

  3. Gradually add 4 tablespoons oil a few drops at a time, mixing well until it resembles jelly.

  4. Add 2 heaping teaspoons salt, 1 teaspoon pepper, and 1 teaspoon mustard, and mix well.

  5. Slowly incorporate 2 tablespoons vinegar.

  6. If the mixture curdles, refrigerate 40 minutes to 1 hour, then mix again.

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. Pepper + mustardtop 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

Egg yolks
Emulsify the oil and vinegar into a thick, stable, creamy dressing.
Oil
Provides fat that, dispersed in small droplets, gives the dressing its rich body.
Vinegar
Adds acidity that balances the richness and brightens the flavour.
Prepared mustard
Helps stabilise the emulsion and adds a sharp, tangy flavour.

The step that matters

Adding the oil gradually. Oil must be added a few drops at a time so it breaks into fine droplets that the egg yolk lecithin can hold. Adding it too fast overwhelms the yolks, so the emulsion splits and the mixture curdles.

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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