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To Roast a Leg of Mutton

A roasted leg of mutton served with onion or currant-jelly sauce and seasonal vegetables.

From an old cookbook · modernised transcription
From a historical cookbook (Internet Archive) · 6 ingredients
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Why it works: Butter and flour are a kitchen classic. They rank in the top 12% of all ingredient pairs, and cooks put them together in 124,287 recipes. Both carry isobutyraldehyde, which smells malty, green. The science ↓

To Roast a Leg of Mutton

Ingredients

Directions

The book gives no oven temperature. The 400°F (200°C) in the steps was added when the recipe was transcribed, as a starting point.

Prepare and roast

  1. Preheat the oven to 400°F (200°C).

  2. Prepare the leg of mutton by seasoning it and placing it in a roasting pan.

  3. Baste the mutton regularly while roasting for 1 hour and 45 minutes to 2 hours.

Plate and serve

  1. Once cooked, place the mutton in the center of a dish.

  2. Surround the mutton with spinach and cauliflower.

  3. Melt butter until smooth and pour it over the mutton.

  4. Serve with onion or currant-jelly sauce and seasonal vegetables.

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. Butter + flourtop 12% of all pairs
    Smell alikelow
    Cooked together124,287 recipes

    Shared aroma: isobutyraldehyde (malty, green).

  2. Butter + oniontop 15% of all pairs
    Smell alikemoderate
    Cooked together42,912 recipes

    Shared aroma: decanal (soap, orange peel).

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

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

  4. Flour + oniontop 17% of all pairs
    Smell alikemoderate
    Cooked together32,460 recipes

    Shared aroma: isobutyraldehyde (malty, green).

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

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

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

Leg of mutton
Forms the main roast, providing the bulk of the dish and its rich, savory meat flavor.
Butter
Adds richness and moisture to the meat when melted and poured over the roast.
Flour
Thickens the pan juices or sauce, giving them a smooth, body-rich texture.
Onion or currant-jelly sauce
Adds sweetness or acidity that balances the richness of the roasted mutton.

The step that matters

Basting during roasting. Regular basting moistens the surface as it cooks, helping the meat stay juicy and promoting even browning. Letting the surface dry out can leave the outside tough and the meat drier.

Swap the onion

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

  1. Leekfits better
  2. Shallotfits better
  3. Chivefits better
  4. Onionthe original

Fit is the average pairing score against 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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