Why it works: Potato and onion are a kitchen classic. They rank in the top 3% of all ingredient pairs, and cooks put them together in 9,023 recipes. Both carry 2-isopropyl-3-methoxypyrazine, which smells earthy, pea. The science ↓
Potato Salad
Ingredients
Directions
Assemble
Slice the cold boiled potatoes and layer them in a salad dish.
Cover with thin slices of hard boiled egg and sprinkle with bits of pickled onion.
Dress and serve
In a bowl, mix the vinegar, salad oil, salt, pepper, and mustard. Beat well.
Pour the dressing over the salad and let it sit for at least 10 minutes before serving.
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 + oniontop 3% of all pairsSmell alikemoderateCooked together9,023 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
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Onion + mustardtop 6% of all pairsSmell alikestrongCooked together9,259 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
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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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Vinegar + mustardtop 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).
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Cold boiled potatoes
- Form the bulk of the salad and hold the dressing in their starchy surface.
- Hard boiled eggs
- Add rich, creamy body and a soft texture to the layers.
- Salad oil
- Carries fat and flavor through the dressing and coats the potatoes.
- Vinegar
- Adds acidity that brightens the dressing and balances the richness.
- Prepared mustard
- Emulsifies the oil and vinegar and adds a sharp, savory note.
The step that matters
Let the salad rest after dressing. Potatoes absorb the dressing slowly, so resting lets the acid and salt penetrate and the flavors blend. Serving too soon leaves the dressing pooled and the salad bland.
Swap the potato
How well each one fits the dish's main ingredients (egg, onion, vinegar, pepper, mustard):
- Horseradishfits better
- Chivefits better
- Broccolifits better
- Potatothe original
Fit is the average pairing score against egg, onion, vinegar, pepper, mustard. 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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