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Sauce

Egg Sauce

A sauce made from mashed hard‑boiled egg yolks, mustard, pepper, salt, vinegar, oil, and optional catsup.

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 ↓

Egg Sauce

Ingredients

Directions

  1. Mash the hard-boiled egg yolks in a bowl.

  2. Add mustard, pepper, coarse sea salt, vinegar, and salad oil. Mix until smooth.

  3. Stir in catsup if desired.

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

Hard-boiled egg yolks
Their fat and emulsifiers give the sauce body and a rich, creamy texture.
Salad oil
Adds fat and smoothness, forming a creamy emulsion with the yolks.
Vinegar
Adds acidity that brightens the flavor and balances the richness of the oil and yolks.
Mustard
Its emulsifying compounds help hold the oil and vinegar together, and it adds sharp flavor.

The step that matters

Mix until smooth. Mashing the yolks well and mixing thoroughly lets the oil disperse into fine droplets held by the yolk and mustard emulsifiers. Incomplete mixing leaves a grainy or separated sauce.

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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