Why it works: Pepper and lemon match in chemistry and in kitchens. They rank in the top 3% of all ingredient pairs, and cooks put them together in 27,047 recipes. Both carry trans-2-nonenal, which smells cardboard, fatty. The science ↓
Beefsteak and Onions
Ingredients
Directions
Cook the steak
Broil the steak quickly, turning often.
Place the cooked steak on a hot dish, season with salt and pepper, and lightly butter it.
Cover the steak and keep it warm in a plate-warmer.
Make the onion butter and serve
Fry the sliced onion in 2 tablespoons of butter for 3 minutes without letting it scorch.
Strain the butter into a hot bowl, stir in the lemon juice and mustard, then pour over the steak.
Cover again and keep hot for 5 minutes before serving.
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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Pepper + lemontop 3% of all pairsSmell alikestrongCooked together27,047 recipes
Shared aroma: trans-2-nonenal (cardboard, fatty).
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Onion + mustardtop 6% of all pairsSmell alikestrongCooked together9,259 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
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Pepper + mustardtop 9% of all pairsSmell alikemoderateCooked together15,430 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
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Lemon + mustardtop 11% of all pairsSmell alikestrongCooked together3,816 recipes
Shared aroma: eucalyptol (eucalyptus, herbal).
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Pepper + oniontop 11% of all pairsSmell alikemoderateCooked together68,474 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
- Beefsteak
- Provides the main meat, cooked quickly by broiling to stay tender and juicy.
- Butter
- Adds richness and moisture, and carries the flavour of the fried onion over the steak.
- Onion
- Browns in the butter to give a sweet, savoury flavour to the sauce.
- Lemon juice
- Adds acidity that brightens the rich butter and balances the meat.
The step that matters
Frying the onion without scorching. Scorched butter and onion turn bitter and dark, spoiling the flavour of the sauce. Gentle frying lets the sugars in the onion brown slowly and sweetly.
Swap the onion
How well each one fits the dish's main ingredients (pepper, butter, lemon, mustard):
- Shallotfits better
- Horseradishfits better
- Broccolifits better
- Onionthe original
Fit is the average pairing score against pepper, butter, lemon, mustard. 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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