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Mustard Dressing for Cold Meats

A mustard-based dressing made with hard‑boiled egg, mustard, salt, oil or butter, and vinegar or lemon juice.

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 ↓

Mustard Dressing for Cold Meats

Ingredients

Directions

  1. Boil the egg for 20 to 30 minutes.

  2. Once cold, remove the yolk and mash it.

  3. Mix the mashed yolk with mustard and salt until well combined.

  4. Add oil or melted butter and mix thoroughly.

  5. Finally, add vinegar or lemon juice until the dressing reaches the desired consistency.

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

    Shared aroma: decanal (soap, orange peel).

  3. Mustard + buttertop 22% of all pairs
    Smell alikemoderate
    Cooked together8,003 recipes

    Shared aroma: guaiacol (smoky, sweet).

  4. Butter + vinegartop 23% of all pairs
    Smell alikemoderate
    Cooked together13,513 recipes

    Shared aroma: isoamyl acetate (banana, pear).

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

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

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

What each ingredient does

Egg yolk
Its fats and emulsifiers bind the oil or butter into a smooth, thick dressing.
Mustard
Adds sharp flavor and helps stabilize the emulsion.
Oil or melted butter
Provides fat that gives the dressing body and a rich mouthfeel.
Vinegar or lemon juice
Adds acidity that brightens flavor and thins the dressing to the desired consistency.

The step that matters

Add the oil or melted butter slowly while mixing. Adding fat gradually lets the egg yolk emulsify it evenly. Adding it too fast can cause the mixture to break and separate into greasy layers.

Swap the mustard

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

  1. Cucumberfits about as well
  2. Shallotfits about as well
  3. Mustardthe original
  4. Chivefits about as well

Fit is the average pairing score against egg, butter, 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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