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 ↓
Beef Rump-steaks Stewed
Ingredients
Directions
Braise the steaks
Melt 1 ounce of butter in a stewpan with 2 onions.
Add the rump steaks and cook over low heat for 5 minutes on each side.
Boil 1 pint of button onions for 30 to 60 minutes.
Add the cooking liquid from the button onions to the steaks, adding broth or boiling water if needed to cover.
Add 12 whole black peppercorns and coarse sea salt to taste, then simmer gently for about 1.5 hours.
Strain off about 1.5 pints of the liquid for the sauce.
Make the sauce
In a clean stewpan, melt 2 ounces of butter and stir in enough flour to make a stiff paste.
Optionally, add 1 tablespoon of claret or Port wine, 1 tablespoon of mushroom ketchup, ¼ teaspoon of ground black pepper, and gradually add the strained liquid.
Bring to a boil for 15 minutes, skim, and strain the sauce.
Serve
Serve the steaks with the boiled onions around the dish and pour the gravy over.
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).
-
Butter + mushroomtop 7% of all pairsSmell alikemoderateCooked together12,525 recipes
Shared aroma: trans-2-decenal (waxy, orange).
-
Onion + mushroomtop 10% of all pairsSmell alikemoderateCooked together10,626 recipes
Shared aroma: 2,4-decadienal (seaweed).
-
Port wine + mushroomtop 10% of all pairsSmell alikemoderateCooked together570 recipes
Shared aroma: guaiacol (smoky, sweet).
-
Onion + peppertop 11% of all pairsSmell alikemoderateCooked together68,474 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
- Rump steaks
- Long gentle simmering in liquid turns the tough muscle tender and moist.
- Butter
- Melted fat carries flavour and gives the sauce a rich, smooth body.
- Flour
- Cooked with butter into a paste, it thickens the strained liquid into a gravy.
- Button onions
- Simmered until soft, they add sweetness and a mild, mellow onion flavour.
The step that matters
Making the flour and butter paste. Flour must be cooked in melted butter until smooth and free of lumps before liquid is added. Stirring it in cold or unevenly leaves lumps, and the thickening starch only swells properly once it is fully dispersed in the fat.
Swap the onion
How well each one fits the dish's main ingredients (butter, sauce, flour, port wine, mushroom, ketchup, pepper):
- Shallotfits better
- Capsicumfits better
- Horseradishfits better
- Onionthe original
Fit is the average pairing score against butter, sauce, flour, port wine, mushroom, 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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