Why it works: Onion and capers match in chemistry and in kitchens. They rank in the top 7% of all ingredient pairs, and cooks put them together in 1,381 recipes. Both carry coumarin, which smells sweet, hay. The science ↓
Beefsteak a LA Tartar
Ingredients
Directions
Finely chop the raw beefsteak.
Mix in salt, pepper, chopped onion, and capers.
Form the mixture into a patty.
Make a small indentation in the center and place an egg yolk in it.
Serve immediately.
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 + caperstop 7% of all pairsSmell alikestrongCooked together1,381 recipes
Shared aroma: coumarin (sweet, hay).
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Pepper + oniontop 11% of all pairsSmell alikemoderateCooked together68,474 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
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Pepper + caperstop 12% of all pairsSmell alikemoderateCooked together2,088 recipes
Shared aroma: coumarin (sweet, hay).
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Capers + eggtop 21% of all pairsSmell alikemoderateCooked together1,311 recipes
Shared aroma: 2-methylbutyraldehyde (malty, chocolate).
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Pepper + eggtop 33% of all pairsSmell alikelowCooked together50,580 recipes
Shared aroma: 2-nonenal (fatty, green).
Pepper and egg barely smell alike, yet cooks put them together in 50,580 recipes: they work on texture and structure more than aroma.
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
Swap the onion
How well each one fits the dish's main ingredients (pepper, capers, egg):
- Shallotfits better
- Mustardfits better
- Chivefits better
- Onionthe original
Fit is the average pairing score against pepper, capers, egg. Candidates are from the same food group and used in at least 100 recipes.
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