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 ↓
Simple Potato Salad
Ingredients
Directions
Prepare
Boil the potatoes until tender, then skin and slice them while hot into a covered vegetable dish.
In a bowl, mix the boiling water, vinegar, oil, salt, and pepper.
Assemble and chill
Layer the sliced potatoes with the thinly sliced onion in the dish.
Pour the dressing over the potatoes and cover the dish.
Refrigerate to cool.
Serve
Before serving, stir the salad with a fork or spoon.
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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Potato + peppertop 9% of all pairsSmell alikemoderateCooked together8,305 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
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Onion + peppertop 11% of all pairsSmell alikemoderateCooked together68,474 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
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Vinegar + oniontop 14% of all pairsSmell alikemoderateCooked together18,226 recipes
Shared aroma: acetic acid (sour, vinegar).
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Vinegar + peppertop 14% of all pairsSmell alikemoderateCooked together27,814 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
- Form the bulk of the salad and hold their shape when sliced while hot.
- Vinegar
- Adds acidity that brightens the dressing and balances the richness of the oil.
- Oil
- Adds fat and moisture, carrying flavour through the dressing and coating the potato slices.
- Onion
- Adds sharp aroma and a pungent bite that mellows as the salad rests.
The step that matters
Dressing the potatoes while they are hot. Hot potato slices absorb the dressing readily, so the flavour penetrates them. Pouring the dressing over cooled potatoes gives a blander, less evenly seasoned salad.
Flavor stand-ins for the onion
How well each one fits the dish's main ingredients (potato, vinegar, pepper):
- Capsicumbetter flavor fit
- Mustardbetter flavor fit
- Cabbageabout as good a flavor fit
- Onionthe original
Fit is the average pairing score against potato, vinegar, pepper. Candidates are from the same food group and used in at least 100 recipes. This compares flavor only: it does not check the job the ingredient does in the dish (bulk, moisture, acidity, structure).
“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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