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 ↓
Mince Collops
Ingredients
Directions
Make the collops
Melt the butter or dripping in a pan over medium heat.
Add the minced beef and cook, stirring with a fork or wooden spoon until browned but not hard.
Mix the flour with the cold water until smooth, then add to the pan.
Stir in the chopped onions and simmer for 1 hour, stirring frequently to prevent lumps.
About 15 minutes before serving, add the salt, pepper, and ketchup.
Serve
Serve hot, garnished with small pieces of toast.
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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Butter + flourtop 12% of all pairsSmell alikelowCooked together124,287 recipes
Shared aroma: isobutyraldehyde (malty, green).
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Flour + ketchuptop 13% of all pairsSmell alikemoderateCooked together2,435 recipes
Shared aroma: ethanol (alcoholic, ethereal).
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 body and savoury meaty flavour of the dish.
- Flour
- Thickens the cooking liquid into a smooth sauce as it simmers.
- Onions
- Add sweetness and aroma as they soften during the long simmer.
- Ketchup
- Adds sweetness, acidity and depth to the savoury sauce.
The step that matters
Adding the flour and water. Flour mixed with cold water first disperses evenly, so it thickens without lumps when it meets the hot pan. Stirring frequently during the simmer keeps the sauce smooth.
Swap the onion
How well each one fits the dish's main ingredients (beef, butter, flour, pepper, ketchup):
- Capsicumfits better
- Shallotfits about as well
- Chivefits about as well
- Onionthe original
Fit is the average pairing score against beef, butter, flour, pepper, ketchup. 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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