Why it works: Flour and shallot match in chemistry and in kitchens. They rank in the top 6% of all ingredient pairs, and cooks put them together in 2,081 recipes. Both carry isobutyraldehyde, which smells malty, green. The science ↓
Émincés De Gigot Roti
Ingredients
Directions
Prepare
Slice the leftover leg of lamb into thin pieces.
Melt butter in a saucepan and add flour to make a roux.
Make the sauce
Gradually whisk in broth, stirring until the mixture is smooth.
Season the sauce with salt, pepper, and vinegar.
Add whole shallots to the sauce and let it reduce gently.
Add the sliced lamb to the sauce, add a piece of butter, and simmer for 10 minutes.
Remove the shallots before serving.
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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Flour + shallottop 6% of all pairsSmell alikestrongCooked together2,081 recipes
Shared aroma: isobutyraldehyde (malty, green).
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Pepper + shallottop 11% of all pairsSmell alikemoderateCooked together5,898 recipes
Shared aroma: 2,4-decadienal (seaweed).
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Vinegar + shallottop 12% of all pairsSmell alikemoderateCooked together2,374 recipes
Shared aroma: isobutyraldehyde (malty, green).
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Lamb + peppertop 12% of all pairsSmell alikemoderateCooked together3,165 recipes
Shared aroma: 2-nonenal (fatty, green).
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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
- Leftover roasted leg of lamb
- Is the main protein, cooked slowly in the sauce to stay tender.
- Butter
- Enriches the roux and sauce with fat, adding richness and smooth mouthfeel.
- Flour
- Thickens the broth into a smooth sauce when cooked with butter as a roux.
- Broth
- Forms the liquid base of the sauce that coats the lamb slices.
- Vinegar
- Adds acidity that brightens the flavour of the rich sauce.
- Shallots
- Release mild onion-like aroma and sweetness into the sauce as they reduce.
The step that matters
Gradually whisk in broth. Adding liquid slowly to the hot roux while whisking keeps starch granules dispersed, so the sauce stays smooth instead of lumpy.
Swap the shallot
How well each one fits the dish's main ingredients (lamb, butter, flour, pepper, vinegar):
- Shallotthe original
- Capsicumfits about as well
- Okrafits about as well
- Potatofits about as well
Fit is the average pairing score against lamb, butter, flour, pepper, vinegar. 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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