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 ↓
Bean Salad
Ingredients
Directions
Layer the salad
Cover the bottom of a salad dish with thinly sliced cold boiled potatoes.
Spread a layer of cold baked or boiled beans over the potatoes.
Add a layer of very thinly sliced onions on top.
Season each layer with coarse sea salt and black pepper.
Dress and serve
Heat a piece of butter in enough vinegar to cover the salad.
Pour the hot butter and vinegar mixture over the salad.
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 + beanstop 5% of all pairsSmell alikestrongCooked together655 recipes
Shared aroma: 2-isobutyl-3-methoxypyrazine (green bell pepper, earthy).
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Beans + oniontop 7% of all pairsSmell alikestrongCooked together5,242 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
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Beans + walnuttop 8% of all pairsSmell alikestrongCooked together162 recipes
Shared aroma: 2,3,5-trimethylpyrazine (cocoa, roasted).
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Potato + peppertop 9% of all pairsSmell alikemoderateCooked together8,305 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 base layer and add bulk to the salad.
- Beans
- Add body and substance between the potato and onion layers.
- Onions
- Contribute sharp, pungent flavour that cuts through the richness.
- Butter
- Adds richness and fat that carries flavour through the hot dressing.
- Vinegar
- Provides acidity that brightens the dish and balances the butter.
The step that matters
Pouring the hot butter and vinegar mixture. The dressing must be hot so it penetrates and softens the layers while the butter stays emulsified with the vinegar. Pouring it cold or letting the butter separate leaves the salad greasy and uneven in flavour.
Swap the walnut
How well each one fits the dish's main ingredients (potato, beans, onion, pepper, butter, vinegar):
- Sesamefits better
- Chickpeafits better
- Black-eyed peafits better
- Walnutthe original
Fit is the average pairing score against potato, beans, onion, pepper, butter, 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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