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
Prepare the potatoes
Boil the potatoes until tender.
Let the potatoes cool.
Slice the cooled potatoes very thin.
Make the dressing
Beat the yolks of three eggs in a bowl.
Add salt, pepper, sugar, and celery seed to the beaten yolks.
Mix the egg mixture with vinegar.
Heat the mixture in a saucepan, stirring constantly until it comes to a boil.
Remove the saucepan from heat.
Let the mixture cool.
Assemble and serve
Mix the sliced potatoes with small cucumbers and sliced onion.
Pour the cooled vinegar mixture over the potato mixture.
Serve.
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).
-
Pepper + celerytop 5% of all pairsSmell alikestrongCooked together16,012 recipes
Shared aroma: 4'-methylacetophenone (bitter almond).
-
Potato + celerytop 7% of all pairsSmell alikemoderateCooked together2,047 recipes
Shared aroma: 4'-methylacetophenone (bitter almond).
-
Celery + oniontop 7% of all pairsSmell alikemoderateCooked together18,518 recipes
Shared aroma: guaiacol (smoky, sweet).
-
Celery + cucumbertop 8% of all pairsSmell alikemoderateCooked together1,745 recipes
Shared aroma: linalool (floral, citrus).
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 and cooled.
- Egg yolks
- Thicken the vinegar mixture into a creamy dressing when heated and emulsify it.
- Vinegar
- Adds acidity that balances the richness of the yolks and sugar.
- Sugar
- Adds sweetness that offsets the sharpness of the vinegar.
- Celery seed
- Adds a savory, aromatic flavor to the dressing.
The step that matters
Heating the egg and vinegar mixture. Stir constantly until it just boils. Egg yolk proteins set and thicken the dressing, but if the heat is too high or uneven, the yolks can scramble into lumps. Removing it from heat promptly keeps the dressing smooth.
Swap the onion
How well each one fits the dish's main ingredients (potato, egg, pepper, sugar, celery, vinegar, cucumber):
- Mustardfits better
- Capsicumfits better
- Chivefits better
- Onionthe original
Fit is the average pairing score against potato, egg, pepper, sugar, celery, vinegar, cucumber. 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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