Why it works: Onion and pepper 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 ↓
Onions with Beefsteak, Etc.
Ingredients
Directions
Prepare
Remove a thin piece off each end of the onions, peel, and slice them into ¼ inch thick slices.
Melt the butter in a saucepan.
Add the steak cut into pieces slightly thinner than for boiling.
Cook
Brown the steak in the butter.
Add pepper, salt, and the sliced onions.
Add the remaining butter.
Cover the saucepan.
Simmer gently until done, about 1.5 hours.
Serve
Arrange the steak in the center of a hot dish.
Boil the onion gravy with walnut ketchup.
Pour the gravy over the meat.
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 + peppertop 11% of all pairsSmell alikemoderateCooked together68,474 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
-
Pepper + walnuttop 13% of all pairsSmell alikemoderateCooked together3,039 recipes
Shared aroma: 2-nonenal (fatty, green).
-
Onion + buttertop 15% of all pairsSmell alikemoderateCooked together42,912 recipes
Shared aroma: decanal (soap, orange peel).
-
Butter + walnuttop 15% of all pairsSmell alikemoderateCooked together6,832 recipes
Shared aroma: eucalyptol (eucalyptus, herbal).
-
Onion + walnuttop 15% of all pairsSmell alikemoderateCooked together1,771 recipes
Shared aroma: 2,4-decadienal (seaweed).
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Spanish onions
- Soften and sweeten as they simmer, building the body of the onion gravy.
- Butter
- Adds richness and helps brown the steak before the gravy forms.
- Steak
- Provides the main protein, which becomes tender through gentle simmering.
- Walnut ketchup
- Adds a dark, savoury tang to the onion gravy.
The step that matters
Simmer gently until done. A gentle simmer keeps the covered steak tender and juicy. Vigorous boiling toughens meat fibres and can dry out the pieces and break down the onions into mush.
Swap the walnut
How well each one fits the dish's main ingredients (onion, butter, pepper, ketchup):
- Beansfits about as well
- Walnutthe original
- Sesamefits about as well
- Chestnutfits less well
Fit is the average pairing score against onion, butter, pepper, ketchup. 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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