Why it works: Mushroom and butter are a kitchen classic. They rank in the top 7% of all ingredient pairs, and cooks put them together in 12,525 recipes. Both carry trans-2-decenal, which smells waxy, orange. The science ↓
Lamb, Minced
Ingredients
Directions
Prepare
Cut the lamb into small dice.
Boil the bones and trimmings for 1 hour to make stock.
Make the sauce
Melt the butter in a stewpan and fry the onion until lightly browned.
Add the flour to the onion and brown it as well.
Stir in the gravy or stock, then add the mushroom ketchup and season with pepper and salt.
Simmer gently for 10 minutes.
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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Mushroom + buttertop 7% of all pairsSmell alikemoderateCooked together12,525 recipes
Shared aroma: trans-2-decenal (waxy, orange).
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Onion + mushroomtop 10% of all pairsSmell alikemoderateCooked together10,626 recipes
Shared aroma: 2,4-decadienal (seaweed).
-
Onion + peppertop 11% of all pairsSmell alikemoderateCooked together68,474 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
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Mushroom + peppertop 11% of all pairsSmell alikemoderateCooked together13,580 recipes
Shared aroma: 2-nonenal (fatty, green).
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Lamb + peppertop 12% of all pairsSmell alikemoderateCooked together3,165 recipes
Shared aroma: 2-nonenal (fatty, green).
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Lamb
- Provides the main meat and bulk of the dish.
- Onion
- Adds sweetness and savoury depth as it browns in the butter.
- Butter
- Carries the frying of the onion and adds richness.
- Flour
- Browns with the butter and onion, then thickens the liquid into a sauce.
- Gravy or stock
- Supplies the liquid that forms the sauce around the meat.
- Mushroom ketchup
- Adds concentrated savoury, umami flavour to the sauce.
The step that matters
Browning the flour. Flour must be cooked with the butter and onion until it smells nutty and loses its raw taste before liquid is added. Stirring in the gravy too early can leave lumps and a floury flavour.
Swap the onion
How well each one fits the dish's main ingredients (lamb, mushroom, ketchup, butter, flour, pepper):
- Shallotfits better
- Capsicumfits better
- Spinachfits better
- Onionthe original
Fit is the average pairing score against lamb, mushroom, ketchup, butter, flour, 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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