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 ↓
Macaroni with Tomatoes and Sidneys
Ingredients
Directions
Prepare
Boil the macaroni in veal broth until tender, then keep warm.
Skin the mutton kidneys and fry them lightly in butter.
Remove the kidneys from the pan, mince them finely, and set aside.
Make the gravy and stew
In the same pan, make a gravy by adding brown flour, rich gravy, minced shallots, and cayenne.
Stew the minced kidneys in the gravy for 10 minutes.
Mix part of the warm macaroni into the gravy and toss for a few minutes.
Serve
Serve on a hot dish, arranging the remaining macaroni on top.
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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Butter + flourtop 12% of all pairsSmell alikelowCooked together124,287 recipes
Shared aroma: isobutyraldehyde (malty, green).
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Veal + muttontop 14% of all pairsSmell alikelowCooked together1,394 recipes
Shared aroma: 1-nonanal (fatty, waxy).
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Mutton + buttertop 16% of all pairsSmell alikemoderateCooked together3,781 recipes
Shared aroma: trans-2-nonenal (cardboard, fatty).
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Butter + shallottop 17% of all pairsSmell alikemoderateCooked together4,426 recipes
Shared aroma: eucalyptol (eucalyptus, herbal).
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
- Macaroni
- Forms the bulk of the dish and soaks up the gravy as it is tossed.
- Mutton kidneys
- Provide the main meaty flavour and a tender, rich texture when stewed.
- Butter
- Fat for frying the kidneys, carrying flavour and adding richness.
- Brown flour
- Thickens the gravy so it coats the kidneys and macaroni.
- Rich gravy
- Supplies the liquid base and savoury depth of the sauce.
- Shallots
- Add mild sweetness and aromatic flavour to the gravy.
The step that matters
Stewing the minced kidneys in the gravy. Kidneys turn tough and rubbery if overcooked, so they should be stewed gently for the stated time and not boiled hard. Gentle heat keeps the meat tender while it absorbs the gravy's flavour.
Swap the shallot
How well each one fits the dish's main ingredients (veal, mutton, butter, flour):
- Leekfits about as well
- Shallotthe original
- Chivefits less well
- Turnipfits less well
Fit is the average pairing score against veal, mutton, butter, flour. 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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