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 ↓
Pot Roast
Ingredients
Directions
Brown the meat
Heat the drippings in an iron kettle.
Add the beef and brown it on all sides.
Fry the chopped onion in butter until brown, then add it to the kettle.
Braise and serve
Pour in enough boiled water to reach halfway up the meat.
Season with salt and pepper, then cover tightly.
Simmer for 2 to 3 hours, depending on the weight of the beef.
Once done, remove the beef and pour the gravy over it before serving.
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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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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Onion + buttertop 15% of all pairsSmell alikemoderateCooked together42,912 recipes
Shared aroma: decanal (soap, orange peel).
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Beef + buttertop 16% of all pairsSmell alikemoderateCooked together10,847 recipes
Shared aroma: 2-furfurylthiol (coffee, roasted).
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Beef
- Provides the main protein, which becomes tender with slow simmering in liquid.
- Onion
- Adds sweetness and savory flavor as it browns in butter.
- Butter
- Adds richness and browning flavor to the onion.
- Drippings
- Fat for searing the beef, building browned flavor in the pot.
The step that matters
Browning the beef on all sides. Searing creates browned flavor through the Maillard reaction. Pale meat added to the liquid will taste flat, and the gravy will lack depth.
Swap the onion
How well each one fits the dish's main ingredients (beef, butter, pepper):
- Potatofits about as well
- Onionthe original
- Capsicumfits about as well
- Tomatofits about as well
Fit is the average pairing score against beef, butter, 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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