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Roast Mutton Smothered in Onions

Roast mutton smothered in onions.

From an old cookbook · modernised transcription
From a historical cookbook (Internet Archive) · 3 ingredients
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Why it works: Onion and butter are a kitchen classic. They rank in the top 15% of all ingredient pairs, and cooks put them together in 42,912 recipes. Both carry decanal, which smells soap, orange peel. The science ↓

Roast Mutton Smothered in Onions

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

  1. Preheat the oven to 350°F (175°C).

  2. Peel and slice the onions.

Roast and fry

  1. Roast the small leg of mutton until cooked to your liking.

  2. In a skillet, fry the onions in clarified butter or leaf lard until brown and tender.

Serve

  1. Once the mutton is done, place it on a platter and pile the fried onions on top.

Recipe from a historical cookbook (Internet Archive).

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.

  1. Onion + buttertop 15% of all pairs
    Smell alikemoderate
    Cooked together42,912 recipes

    Shared aroma: decanal (soap, orange peel).

  2. Mutton + buttertop 16% of all pairs
    Smell alikemoderate
    Cooked together3,781 recipes

    Shared aroma: trans-2-nonenal (cardboard, fatty).

  3. Mutton + oniontop 18% of all pairs
    Smell alikelow
    Cooked together4,531 recipes

    Shared aroma: 2,4-decadienal (seaweed).

Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs

What each ingredient does

Mutton
Forms the main roasted meat, cooking through in the oven to become tender and savory.
Onions
Browning in fat adds sweetness and savory depth as the sugars caramelize.
Clarified butter or leaf lard
Fat that carries heat evenly so the onions brown and soften without burning.

The step that matters

Frying the onions until brown and tender. Onions need gentle, sustained heat in fat so their natural sugars caramelize slowly. Rushing over high heat scorches the outside while the centres stay sharp and raw.

Swap the onion

How well each one fits the dish's main ingredients (mutton, butter):

  1. Potatofits about as well
  2. Leekfits about as well
  3. Onionthe original
  4. Shallotfits less well

Fit is the average pairing score against mutton, 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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