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 ↓
Roast Beef
Ingredients
Directions
The book says “a hot oven”. The 400°F in the steps is the modern equivalent, not the book's own figure.
Prepare
Wipe and trim the meat.
Sprinkle with coarse sea salt and black pepper.
Place in a roasting pan and lay thin slices of onion on top.
Dredge the meat with flour.
Roast
Put the meat into a very hot oven (400°F / 200°C).
Wait until the meat is seared.
Reduce the heat.
Baste the meat with ½ cup of hot water.
Cook for about 20 minutes for each pound.
Turn the meat to brown the bottom.
Baste frequently with the pan juices or more hot water if necessary.
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.
Photo for illustrative purposes only · Contact us to use it
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).
-
Meat + oniontop 17% of all pairsSmell alikelowCooked together6,364 recipes
Shared aroma: 2,4-decadienal (seaweed).
-
Onion + flourtop 17% of all pairsSmell alikemoderateCooked together32,460 recipes
Shared aroma: isobutyraldehyde (malty, green).
-
Pepper + flourtop 19% of all pairsSmell alikemoderateCooked together50,459 recipes
Shared aroma: isobutyraldehyde (malty, green).
-
Meat + peppertop 19% of all pairsSmell alikelowCooked together8,777 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
- Meat
- Forms the main body of the dish and supplies the flavour and juices that the pan drippings come from.
- Flour
- Coats the surface so it browns and forms a flavourful crust during roasting.
- Onion
- Sits on the meat and perfumes the pan juices as they form, adding aroma.
The step that matters
Searing in a very hot oven before reducing the heat. A very hot oven browns the flour coating and meat surface quickly, building crust and flavour. If the heat is not reduced afterward, the outside can over-darken or dry out before the centre cooks through.
Swap the onion
How well each one fits the dish's main ingredients (meat, pepper, flour):
- Shallotfits better
- Capsicumfits better
- Okrafits better
- Onionthe original
Fit is the average pairing score against meat, pepper, flour. 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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