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Potato Salad

A cold salad of boiled potatoes, eggs, onion, seasoned with salt, pepper, celery seed, and dressed with a mustard‑butter‑milk‑vinegar mixture.

From an old cookbook · modernised transcription
From a historical cookbook (Internet Archive) · 13 ingredients
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Why it works: Celery and mustard are a kitchen classic. They rank in the top 2% of all ingredient pairs, and cooks put them together in 4,169 recipes. Both carry guaiacol, which smells smoky, sweet. The science ↓

Potato Salad

Ingredients

Directions

Combine

  1. In a bowl, combine cold boiled potatoes, hard-boiled eggs, and chopped onion.

  2. Season with salt, pepper, and celery seed.

Make the dressing

  1. In a separate bowl, mix 2 eggs, salt, sugar, mustard, and melted butter until well combined.

  2. Add sweet milk to the mixture and stir.

  3. Place the mixture in a double boiler and stir constantly until heated.

  4. Slowly add vinegar to the heated mixture while stirring.

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. Celery + mustardtop 2% of all pairs
    Smell alikemoderate
    Cooked together4,169 recipes

    Shared aroma: guaiacol (smoky, sweet).

  2. Potato + oniontop 3% of all pairs
    Smell alikemoderate
    Cooked together9,023 recipes

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

  3. Pepper + celerytop 5% of all pairs
    Smell alikestrong
    Cooked together16,012 recipes

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

  4. Onion + mustardtop 6% of all pairs
    Smell alikestrong
    Cooked together9,259 recipes

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

  5. Potato + celerytop 7% of all pairs
    Smell alikemoderate
    Cooked together2,047 recipes

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

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

What each ingredient does

Potatoes
Provide the starchy bulk that gives the salad its body.
Eggs
Thicken the dressing as their proteins set during gentle heating.
Butter
Adds richness and a smooth, rounded mouthfeel to the dressing.
Mustard
Adds sharp, pungent flavor that balances the richness.
Vinegar
Adds acidity that brightens the dressing and cuts the richness.
Sugar
Adds sweetness that softens the sharpness of the vinegar and mustard.

The step that matters

Heating the egg mixture while stirring constantly. Eggs thicken when heated gently but scramble if they get too hot or sit still. Constant stirring in a double boiler spreads the heat evenly, and adding vinegar slowly keeps the dressing smooth instead of curdled.

Swap the onion

How well each one fits the dish's main ingredients (potato, egg, pepper, celery, sugar, mustard, butter):

  1. Chivefits better
  2. Horseradishfits better
  3. Capsicumfits better
  4. Onionthe original

Fit is the average pairing score against potato, egg, pepper, celery, sugar, mustard, butter. 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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