Why it works: Pepper and onion are a kitchen classic. They rank in the top 11% of all ingredient pairs, and cooks put them together in 68,474 recipes. Both carry 2-isopropyl-3-methoxypyrazine, which smells earthy, pea. The science ↓
Beefsteak
Ingredients
Directions
Prepare
Score the steak transversely with a sharp knife.
Place the steak in a skillet with butter.
Season with salt, pepper, and finely chopped onion.
Cook and serve
Cook for 45 minutes in its own juices.
Serve hot.
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 + oniontop 11% of all pairsSmell alikemoderateCooked together68,474 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
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Onion + buttertop 15% of all pairsSmell alikemoderateCooked together42,912 recipes
Shared aroma: decanal (soap, orange peel).
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Pepper + buttertop 21% of all pairsSmell alikemoderateCooked together85,593 recipes
Shared aroma: trans-2-nonenal (cardboard, fatty).
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Tenderloin steak
- Forms the main body of the dish and provides the meat that is cooked tender.
- Butter
- Adds fat that carries flavor and helps the steak brown in the skillet.
- Onion
- Adds aroma and a mild sweetness as it cooks with the steak.
The step that matters
Cook for 45 minutes in its own juices. Tenderloin is a lean cut, and long cooking pushes its proteins past the point of tenderness, which dries the meat and makes it tough. Watching the time and keeping the heat gentle helps the steak stay moist while the juices reduce into a flavorful base.
Swap the onion
How well each one fits the dish's main ingredients (pepper, butter):
- Capsicumfits better
- Potatofits better
- Carrotfits about as well
- Onionthe original
Fit is the average pairing score against pepper, butter. 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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