Why it works: Onion and potato are a kitchen classic. They rank in the top 3% of all ingredient pairs, and cooks put them together in 9,023 recipes. Both carry 2-isopropyl-3-methoxypyrazine, which smells earthy, pea. The science ↓
Beef a LA Mode
Ingredients
Directions
Brown the roast
Melt butter in an iron kettle over medium heat.
Add the pot roast and brown it on both sides.
Simmer with vegetables
Gradually add water to keep the roast simmering.
When the roast is halfway done, add the scraped and lengthwise cut carrots.
Add the onions (sliced or whole) with the carrots.
When the carrots and onions are nearly done, add the lengthwise cut potatoes.
Make the gravy
After removing the meat and vegetables, add flour to the remaining liquid to make gravy.
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 + potatotop 3% of all pairsSmell alikemoderateCooked together9,023 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
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Carrot + potatotop 4% of all pairsSmell alikestrongCooked together3,107 recipes
Shared aroma: 2-isobutyl-3-methoxypyrazine (green bell pepper, earthy).
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Carrot + peppertop 6% of all pairsSmell alikestrongCooked together14,555 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
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Onion + carrottop 6% of all pairsSmell alikemoderateCooked together21,601 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
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Potato + peppertop 9% of all pairsSmell alikemoderateCooked together8,305 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Pot roast
- Provides the main meat, which becomes tender through slow simmering in liquid.
- Butter
- Browns the surface of the meat and adds richness to the cooking liquid.
- Onions
- Add sweetness and aroma as they soften and flavor the cooking liquid.
- Carrots
- Add natural sweetness and a firm texture that holds up during long simmering.
- Potatoes
- Add starch and body, absorbing flavor from the cooking liquid as they cook.
- Flour (in the method)
- Thickens the remaining cooking liquid into a gravy.
The step that matters
Browning the pot roast. Searing the meat over medium heat develops browned flavors through the Maillard reaction. Skipping or rushing this step leaves the gravy and meat flatter in taste.
Swap the carrot
How well each one fits the dish's main ingredients (onion, potato, pepper, butter):
- Chivefits better
- Capsicumfits about as well
- Carrotthe original
- Leekfits about as well
Fit is the average pairing score against onion, potato, 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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