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
Boil the potatoes until tender, then peel and mash them until smooth.
Mince the onions and add them to the mashed potatoes.
In a bowl, mix the egg yolks, vinegar, black pepper, celery seed, mustard, and melted butter.
Combine the dressing with the potato mixture and mix well.
Garnish with slices of lemon and serve with lettuce or celery.
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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Celery + mustardtop 2% of all pairsSmell alikemoderateCooked together4,169 recipes
Shared aroma: guaiacol (smoky, sweet).
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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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Pepper + celerytop 5% of all pairsSmell alikestrongCooked together16,012 recipes
Shared aroma: 4'-methylacetophenone (bitter almond).
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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 + celerytop 7% of all pairsSmell alikemoderateCooked 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
- Form the bulk of the salad, and mashing them gives it a smooth, creamy body.
- Egg yolks
- Add richness and emulsify with the butter and mustard to bind the dressing.
- Vinegar
- Adds acidity that brightens the flavour and balances the richness of the yolks and butter.
- Mustard
- Adds sharp flavour and helps emulsify the dressing.
- Melted butter
- Adds fat and a rich, smooth mouthfeel to the dressing.
The step that matters
Combine the dressing with the potato mixture and mix well. Mashed potatoes absorb dressing unevenly if they are still warm or lumpy, so the dressing can pool and leave bland or greasy patches. Mixing thoroughly spreads the fat and acid evenly through the starch.
Swap the onion
How well each one fits the dish's main ingredients (potato, egg, vinegar, pepper, celery, mustard, butter):
- Horseradishfits better
- Chivefits better
- Capsicumfits better
- Onionthe original
Fit is the average pairing score against potato, egg, vinegar, pepper, celery, 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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