Why it works: Potato and onion are a kitchen classic. They rank in the top 3% of all ingredient pairs, and cooks put them together in 9,023 recipes. Both carry 2-isopropyl-3-methoxypyrazine, which smells earthy, pea. The science ↓
On Baking Meat
Ingredients
Directions
The book gives no oven temperature. The 350°F (175°C) in the steps was added when the recipe was transcribed, as a starting point.
Prepare
Preheat the oven to 350°F (175°C).
Parboil and peel the potatoes.
Season the leg of mutton with coarse sea salt and black pepper.
Bake
Place the leg of mutton in a baking dish with the potatoes and onion.
Add a generous amount of butter on top.
Bake in the oven until the meat is cooked through and tender.
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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Potato + oniontop 3% of all pairsSmell alikemoderateCooked together9,023 recipes
Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).
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Potato + peppertop 9% of all pairsSmell alikemoderateCooked together8,305 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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Potato + buttertop 13% of all pairsSmell alikemoderateCooked together6,456 recipes
Shared aroma: (z)-4-heptenal (biscuit, cream).
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Onion + buttertop 15% of all pairsSmell alikemoderateCooked together42,912 recipes
Shared aroma: decanal (soap, orange peel).
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Leg of mutton
- Forms the main body of the dish and becomes tender and juicy as it cooks slowly.
- Potatoes
- Absorb meat juices and butter, becoming soft inside and lightly browned on the surface.
- Butter
- Adds fat that carries flavor, keeps the meat moist, and helps the surface brown.
- Onion
- Releases moisture and sweetness as it cooks, flavoring the juices in the dish.
The step that matters
Bake until cooked through and tender. Mutton is a tough cut that needs enough time at oven heat for its connective tissue to break down. Pulling it early leaves meat firm and chewy, so check that the thickest part is fully cooked and tender before serving.
Swap the onion
How well each one fits the dish's main ingredients (mutton, potato, pepper, butter):
- Onionthe original
- Capsicumfits about as well
- Carrotfits about as well
- Asparagusfits about as well
Fit is the average pairing score against mutton, potato, pepper, butter. 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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