Why it works: Potato and mustard are a kitchen classic. They rank in the top 7% of all ingredient pairs, and cooks put them together in 1,340 recipes. Both carry 2-isopropyl-3-methoxypyrazine, which smells earthy, pea. The science ↓
Potato Salad
Ingredients
Directions
Prepare the potatoes
Boil the white potatoes until tender, then let them cool.
Peel and slice the cooled potatoes thinly.
Make the dressing and serve
In a bowl, mix the mustard, vinegar, butter, and whipped egg yolks.
Add the seasoning to the sliced potatoes just before serving.
Season with coarse sea salt and black pepper to taste.
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.
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Potato + mustardtop 7% of all pairsSmell alikemoderateCooked together1,340 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
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Mustard + vinegartop 7% of all pairsSmell alikemoderateCooked together14,067 recipes
Shared aroma: isobutyraldehyde (malty, green).
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Pepper + mustardtop 9% of all pairsSmell alikemoderateCooked together15,430 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
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Potato + peppertop 9% of all pairsSmell alikemoderateCooked together8,305 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
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Potato + buttertop 13% of all pairsSmell alikemoderateCooked together6,456 recipes
Shared aroma: (z)-4-heptenal (biscuit, cream).
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- White potatoes
- Form the bulk of the salad, providing starchy body and a tender texture when boiled.
- Egg yolks
- Emulsify with the butter and mustard to give the dressing a creamy, smooth body.
- Vinegar
- Adds acidity that brightens the dressing and balances the richness of the yolks and butter.
- Butter
- Adds fat and richness, helping the dressing taste smooth and full.
The step that matters
Let the potatoes cool before slicing and dressing. Warm potatoes soak up dressing unevenly and can break a emulsified egg-yolk dressing, so letting them cool first helps the slices hold their shape and keeps the dressing stable.
Swap the potato
How well each one fits the dish's main ingredients (pepper, mustard, vinegar, butter, egg):
- Horseradishfits better
- Shallotfits better
- Capsicumfits better
- Potatothe original
Fit is the average pairing score against pepper, mustard, vinegar, butter, egg. 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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