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Roast Leo of Lamb

A roasted lamb loin served with mint sauce and salad.

From an old cookbook · modernised transcription
From a historical cookbook (Internet Archive) · 4 ingredients
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Why it works: Lamb and mint work together. They rank in the top 12% of all ingredient pairs, and cooks put them together in 772 recipes. Both carry 2,4-decadienal, which smells seaweed. The science ↓

Roast Leo of Lamb

Ingredients

Directions

Roast the lamb

  1. Roast the lamb for 1 hour and 45 minutes.

  2. Remove the lamb from the roasting pan.

Make the gravy

  1. Thicken the drippings in the pan with flour.

Serve

  1. Serve the lamb with mint sauce and a salad.

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. Lamb + minttop 12% of all pairs
    Smell alikelow
    Cooked together772 recipes

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

  2. Flour + saucetop 18% of all pairs
    Smell alikemoderate
    Cooked together8,078 recipes

    Shared aroma: ethanol (alcoholic, ethereal).

  3. Lamb + flourtop 21% of all pairs
    Smell alikemoderate
    Cooked together1,402 recipes

    Shared aroma: acetaldehyde (pungent, ethereal).

  4. Lamb + saucetop 21% of all pairs
    Smell alikelow
    Cooked together925 recipes

    Shared aroma: decanoic acid (soapy, waxy).

  5. Flour + minttop 28% of all pairs
    Smell alikelow
    Cooked together1,037 recipes

    Shared aroma: isobutyraldehyde (malty, green).

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

What each ingredient does

Lamb
The main protein, which browns on the outside while cooking through in the oven.
Flour
Starch that thickens the pan drippings into a smooth gravy.
Mint sauce
Adds acidity and fresh mint aroma that cut through the rich meat.

The step that matters

Thicken the drippings with flour. Flour should be stirred into the hot fat and drippings so it cooks evenly. Raw flour tastes pasty and clumps, while heated starch swells in the liquid and thickens the gravy smoothly.

Swap the mint

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

  1. Jalapenofits better
  2. Capersfits better
  3. Cuminfits better
  4. Mintthe original

Fit is the average pairing score against lamb, flour, sauce. 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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