Why it works: Mustard and celery 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 ↓
Irish Potato Salad
Ingredients
Directions
Cook the dressing
Combine mashed potatoes, butter, cayenne pepper, salt, mustard, celery seed, and vinegar in a double boiler.
Cook the mixture until it thickens.
Combine
Pour the thickened mixture into the mashed potatoes.
Add the hard-boiled eggs, cut finely, along with the cut celery, chopped onion, and sweet pickle with its juice.
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 + celerytop 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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Mustard + oniontop 6% of all pairsSmell alikestrongCooked together9,259 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
-
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 and body of the salad, holding the other ingredients together.
- Butter
- Adds fat and richness, giving the dressing a smooth, mellow mouthfeel.
- Vinegar
- Adds acidity that sharpens the flavor and balances the richness of the butter and eggs.
- Eggs
- Add body and richness to the salad as chopped hard-boiled pieces.
- Sweet pickle
- Adds sweetness and acidity, along with its juice for extra tang.
- Mustard
- Adds sharp, pungent flavor that cuts through the richness of the dressing.
The step that matters
Cook the mixture until it thickens. Gentle heat in a double boiler keeps the mixture from scorching while the potato starch swells and thickens it. Stirring helps prevent lumps and an uneven texture.
Swap the onion
How well each one fits the dish's main ingredients (potato, butter, pepper, egg, mustard, celery, vinegar):
- Horseradishfits better
- Chivefits better
- Capsicumfits better
- Onionthe original
Fit is the average pairing score against potato, butter, pepper, egg, mustard, celery, vinegar. 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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