Why it works: Onion and potato 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 ↓
Red Herrings
Ingredients
Directions
Soak the red herrings in water for 30 minutes.
Wipe them dry with a cloth.
Split them down the back and spread them open.
Toast or broil them for about 4 minutes.
Sprinkle with chopped onions, a few drops of vinegar, and a little butter.
Serve with boiled potatoes.
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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Onion + potatotop 3% of all pairsSmell alikemoderateCooked together9,023 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
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Butter + potatotop 13% of all pairsSmell alikemoderateCooked together6,456 recipes
Shared aroma: (z)-4-heptenal (biscuit, cream).
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Onion + vinegartop 14% of all pairsSmell alikemoderateCooked together18,226 recipes
Shared aroma: acetic acid (sour, vinegar).
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Onion + buttertop 15% of all pairsSmell alikemoderateCooked together42,912 recipes
Shared aroma: decanal (soap, orange peel).
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Vinegar + potatotop 20% of all pairsSmell alikemoderateCooked together1,608 recipes
Shared aroma: beta-damascenone (apple, rose).
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
Swap the potato
How well each one fits the dish's main ingredients (onion, vinegar, butter):
- Mustardfits about as well
- Chivefits about as well
- Potatothe original
- Shallotfits about as well
Fit is the average pairing score against onion, vinegar, butter. Candidates are from the same food group and used in at least 100 recipes.
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