Why it works: Sauce and ketchup match in chemistry and in kitchens. They rank in the top 1% of all ingredient pairs, and cooks put them together in 1,099 recipes. Both carry ethanol, which smells alcoholic, ethereal. The science ↓
Warmed-over Beef
Ingredients
Directions
Make the gravy
In a skillet, melt the butter over medium heat.
Stir in the flour and cook until lightly browned.
Add the stock or gravy, Worcestershire sauce, and ketchup; season with salt and pepper.
Cook and serve
Add the sliced beef and simmer for 15 minutes.
Serve on a hot platter, garnished with roast or small boiled potatoes.
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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Sauce + ketchuptop 1% of all pairsSmell alikestrongCooked together1,099 recipes
Shared aroma: ethanol (alcoholic, ethereal).
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Beef + potatotop 8% of all pairsSmell alikemoderateCooked together2,052 recipes
Shared aroma: sotolon (curry, maple).
-
Pepper + potatotop 9% of all pairsSmell alikemoderateCooked together8,305 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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Butter + flourtop 12% of all pairsSmell alikelowCooked together124,287 recipes
Shared aroma: isobutyraldehyde (malty, green).
Butter and flour barely smell alike, yet cooks put them together in 124,287 recipes: they work on texture and structure more than aroma.
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; thin slices cook through quickly in the simmering gravy.
- Butter
- Carries the flour and adds richness and flavour to the gravy base.
- Flour
- Thickens the gravy and, when lightly browned, adds a nutty, toasted flavour.
- Stock or gravy
- Forms the liquid base that gives the sauce its body and savoury flavour.
- Worcestershire sauce
- Adds savoury, tangy depth to the gravy.
- Ketchup
- Adds sweetness and acidity that rounds out the gravy's flavour.
The step that matters
Cook the flour until lightly browned. Flour must cook in the melted butter long enough to lose its raw taste and gain toasted flavour; stirring prevents lumps and scorching before the liquid is added.
Swap the potato
How well each one fits the dish's main ingredients (beef, butter, flour, sauce, ketchup, pepper):
- Capsicumfits better
- Shallotfits better
- Horseradishfits better
- Potatothe original
Fit is the average pairing score against beef, butter, flour, sauce, ketchup, 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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