Why it works: Beef and onion are a kitchen classic. They rank in the top 7% of all ingredient pairs, and cooks put them together in 17,092 recipes. Both carry 2-isopropyl-3-methoxypyrazine, which smells earthy, pea. The science ↓
Roast Beef
Ingredients
Directions
The book says “a quick oven”. The 400°F (200°C) in the steps is the modern equivalent, not the book's own figure.
Prepare the roast
Preheat the oven to 400°F (200°C).
Place the beef roast on an iron rack in a pan and dust it with flour and coarse sea salt.
Roast the meat in the oven until well browned to retain the juices.
Add 1 quart of water and 1 onion to the pan and cook slowly for 1.5 hours.
Make the gravy
Before removing the meat, mix flour and water to make a paste, avoiding lumps.
Remove the meat and onion from the pan and place the pan on the stove.
Bring the water to a boil and gradually add the paste, stirring constantly until the gravy thickens.
Season the gravy with salt and pepper to taste.
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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Beef + oniontop 7% of all pairsSmell alikemoderateCooked together17,092 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
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Beef + peppertop 10% of all pairsSmell alikemoderateCooked together18,971 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
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Onion + peppertop 11% of all pairsSmell alikemoderateCooked together68,474 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
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Flour + oniontop 17% of all pairsSmell alikemoderateCooked together32,460 recipes
Shared aroma: isobutyraldehyde (malty, green).
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Flour + peppertop 19% of all pairsSmell alikemoderateCooked together50,459 recipes
Shared aroma: isobutyraldehyde (malty, green).
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Beef roast
- Forms the main body of the dish; browning during roasting builds savory flavor and color.
- Flour
- Dusted on the meat for browning, and mixed with water to thicken the gravy.
- Onion
- Cooks slowly in the pan liquid, adding aromatic sweetness to the drippings.
The step that matters
Stirring the flour paste into the boiling liquid. Adding the flour paste gradually while stirring constantly disperses the starch evenly, preventing lumps and allowing the gravy to thicken smoothly.
Swap the onion
How well each one fits the dish's main ingredients (beef, flour, pepper):
- Capsicumfits better
- Carrotfits better
- Okrafits better
- Onionthe original
Fit is the average pairing score against beef, flour, pepper. 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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