Why it works: Onion and potato match in chemistry and in kitchens. They rank in the top 2% of all ingredient pairs, and 9,019 recipes mention both. Both carry 2-isopropyl-3-methoxypyrazine, which smells earthy, pea. The science ↓
The recipe
Ingredients
Directions
Prepare
Mince the onion and green chillies, then squeeze the juice of the fresh lime over them and let steep for a while.
Peel the skin off the broiled potatoes and mash them with a fork.
Combine
Add salt, mustard oil, green chillies, onions, and lime juice to the potatoes.
Mix everything together gently to avoid caking.
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 aroma chemistry they share, and how many recipes mention both.
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Onion + potatotop 2% of all pairsAroma overlapstrongMentioned together9,019 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
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Potato + mustardtop 4% of all pairsAroma overlapstrongMentioned together1,339 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
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Onion + mustardtop 4% of all pairsAroma overlapstrongMentioned together9,243 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
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Lime + potatotop 6% of all pairsAroma overlapstrongMentioned together424 recipes
Shared aroma: myrcene (balsamic, herbaceous).
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Lime + mustardtop 6% of all pairsAroma overlapstrongMentioned together392 recipes
Shared aroma: eucalyptol (eucalyptus, herbal).
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Potatoes
- Form the soft mashed body of the dish.
- Lime juice
- Adds acidity that brightens the flavour of the mashed potato.
- Mustard oil
- Adds fat and a pungent aroma to the potatoes.
The step that matters
Mix everything together gently. Overworking mashed potato releases starch and makes it gluey, so gentle mixing keeps the texture light and prevents the mixture from caking.
Flavor stand-ins for the lime
How well each one fits the dish's main ingredients (onion, potato, mustard):
- Avocadobetter flavor fit
- Limethe original
- Mangoabout as good a flavor fit
- Pumpkinabout as good a flavor fit
Fit is the average pairing score against onion, potato, mustard. 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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