Why it works: Mustard and potato 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 dressing
Prepare the dressing by mixing egg yolks, sugar, flour, vinegar, water, butter, salt, mustard, and pepper in a bowl.
Assemble the salad
Slice cold boiled potatoes very thin and layer them in a salad dish.
Sprinkle a pinch of chopped parsley, a little grated onion, and diced beet over the potatoes.
Drizzle some dressing over the layer and repeat until the dish is full.
Garnish with sprigs of parsley and bits of beet.
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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Mustard + potatotop 7% of all pairsSmell alikemoderateCooked together1,340 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
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Vinegar + mustardtop 7% of all pairsSmell alikemoderateCooked together14,067 recipes
Shared aroma: isobutyraldehyde (malty, green).
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Mustard + peppertop 9% of all pairsSmell alikemoderateCooked together15,430 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
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Pepper + potatotop 9% of all pairsSmell alikemoderateCooked together8,305 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
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Flour + buttertop 12% of all pairsSmell alikelowCooked together124,287 recipes
Shared aroma: isobutyraldehyde (malty, green).
Flour and butter barely smell alike, yet cooks put them together in 124,287 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
- Thicken the dressing and bind it into a smooth, creamy sauce.
- Vinegar
- Adds acidity that gives the dressing its sharp, tangy flavour.
- Flour
- Stabilises the dressing so it thickens and holds together without splitting.
- Cold boiled potatoes
- Form the bulk of the salad and soak up the dressing as it is layered.
- Sugar
- Balances the acidity of the vinegar with a touch of sweetness.
The step that matters
Cooking the dressing. Egg yolks thicken only gently with heat. If the dressing is heated too fast or too long, the yolks can scramble and curdle, so it should be stirred steadily over low heat until smooth and thickened.
Swap the potato
How well each one fits the dish's main ingredients (egg, sugar, flour, vinegar, butter, mustard, pepper):
- Shallotfits better
- Horseradishfits better
- Chivefits better
- Potatothe original
Fit is the average pairing score against egg, sugar, flour, vinegar, butter, mustard, pepper. 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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