Why it works: Pepper and parsley match in chemistry and in kitchens. They rank in the top 2% of all ingredient pairs, and cooks put them together in 34,122 recipes. Both carry 4'-methylacetophenone, which smells bitter almond. The science ↓
Roast Mutton
Ingredients
Directions
The book says “a good oven”. The 400°F (200°C) in the steps is the modern equivalent, not the book's own figure.
Prepare the mutton
Sew the breast of mutton in a sturdy cloth and boil for 8 minutes per pound.
Remove from water, wipe clean, and place in a dripping pan.
Score the skin with a sharp knife, rub with salt and pepper, and wash with beaten egg.
Bake
Sprinkle thickly with bread crumbs and bake in a 400°F (200°C) oven for 30 minutes, basting twice with melted butter.
Check doneness with a skewer; if not done, return to the oven.
Make the gravy and serve
Combine the broth with butter and flour in a saucepan, and bring to a boil.
Stir in parsley, onion, pickled cucumber, and pounded egg yolks, and simmer for 3 minutes.
Pour some gravy over the mutton and serve the rest in a gravy boat.
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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Pepper + parsleytop 2% of all pairsSmell alikestrongCooked together34,122 recipes
Shared aroma: 4'-methylacetophenone (bitter almond).
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Bread + buttertop 7% of all pairsSmell alikemoderateCooked together27,232 recipes
Shared aroma: delta-decalactone (sweet, creamy).
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Parsley + oniontop 9% of all pairsSmell alikemoderateCooked together25,843 recipes
Shared aroma: 2,4-decadienal (seaweed).
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Pepper + oniontop 11% of all pairsSmell alikemoderateCooked together68,474 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
-
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
- Mutton breast
- Forms the main body of the dish, becoming tender through boiling and then roasting.
- Bread crumbs
- Form a crisp, browned crust over the outside of the meat.
- Butter
- Adds richness and moisture, and helps the crumb crust brown while basting.
- Egg yolks
- Add richness and body to the gravy sauce as it thickens.
- Flour
- Thickens the broth into a smooth gravy.
The step that matters
Checking doneness with a skewer. The boiled and roasted meat must be cooked through; a skewer shows whether the centre is tender and hot. If it is not done, returning it to the oven finishes cooking without drying the crust, which is more reliable than relying on the 30-minute bake time alone.
Swap the onion
How well each one fits the dish's main ingredients (mutton, pepper, egg, bread, butter, flour, parsley):
- Shallotfits better
- Leekfits better
- Chivefits better
- Onionthe original
Fit is the average pairing score against mutton, pepper, egg, bread, butter, flour, parsley. 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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