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 and Onions
Ingredients
Directions
Prepare the steak
Broil the steak and season it with salt and pepper.
Spread butter on the steak.
Place the steak on a platter in the oven.
Cook the onions
Slice the onions thinly.
Fry the sliced onions in hot fat until brown, stirring frequently.
Season the onions with salt and pepper.
Add a little hot water to the onions.
Let the onions simmer slowly for about 30 minutes or until the water has evaporated.
Serve
Pour the onions over and around the steak.
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.
-
Pepper + oniontop 11% of all pairsSmell alikemoderateCooked together68,474 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
-
Butter + oniontop 15% of all pairsSmell alikemoderateCooked together42,912 recipes
Shared aroma: decanal (soap, orange peel).
-
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
- Steak
- Is the main protein, cooked by broiling and finished in the oven on a platter.
- Onions
- Browning and slow simmering turn them sweet and soft, forming a topping for the steak.
- Butter
- Adds fat and richness to the steak's surface as it cooks.
The step that matters
Simmering the onions until the water has evaporated. Adding water and simmering slowly lets the onions soften and cook through; if the water is not fully evaporated the onions stay wet and lose their browned flavour. Stopping too early or too late changes the final texture.
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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