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Baked Loin of Lamb with Vegetables

A roasted lamb loin served with Jerusalem artichokes, onions, parsnips, turnips, tomatoes, and optional truffles.

From an old cookbook · modernised transcription
From a historical cookbook (Internet Archive) · 10 ingredients
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Why it works: Jerusalem artichoke and turnip share more aroma than cooks usually use. They rank in the top 1% of all ingredient pairs, and cooks put them together in 74 recipes. Both carry coumarin, which smells sweet, hay. The science ↓

Baked Loin of Lamb with Vegetables

Oven, in the book's wordsA brisk oven

Ingredients

Directions

The book says “a brisk oven”. The 400°F (200°C) in the steps is the modern equivalent, not the book's own figure.

Prepare

  1. Flour the loin of lamb.

  2. Place the floured loin on a buttered porcelain dish.

  3. Arrange the Jerusalem artichokes, onions, parsnips, and turnips around the lamb.

  4. Season the lamb and vegetables with salt and pepper.

  5. Add the butter pieces.

Roast

  1. Cook in a 400°F (200°C) oven for 45 minutes, turning and basting occasionally.

  2. Pour sherry or madeira over the meat.

  3. Add the tomatoes to the dish.

  4. Return to the oven until the tomatoes are cooked.

  5. Rearrange the dish, placing the vegetables separately and the tomatoes on the meat.

  6. Garnish with thinly-cut truffles around the edge if desired.

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. Jerusalem artichoke + turniptop 1% of all pairs
    Smell alikestrong
    Cooked together74 recipes

    Shared aroma: coumarin (sweet, hay).

  2. Parsnip + turniptop 1% of all pairs
    Smell alikestrong
    Cooked together590 recipes

    Shared aroma: coumarin (sweet, hay).

  3. Jerusalem artichoke + parsniptop 1% of all pairs
    Smell alikestrong
    Cooked together12 recipes

    Shared aroma: coumarin (sweet, hay).

  4. Onion + turniptop 5% of all pairs
    Smell alikestrong
    Cooked together7,585 recipes

    Shared aroma: coumarin (sweet, hay).

  5. Onion + parsniptop 9% of all pairs
    Smell alikestrong
    Cooked together1,054 recipes

    Shared aroma: 2-isopropyl-3-methoxypyrazine (earthy, pea).

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

What each ingredient does

Lamb loin
Forms the main meat; flouring helps the surface brown and gives the juices body.
Sherry or madeira
Adds aroma and sweetness that combine with the pan juices as they reduce.
Butter
Adds fat that carries flavor and promotes browning on the lamb and vegetables.
Jerusalem artichokes
Starchy vegetable that softens while absorbing the roasting juices and fat.
Parsnips
Starchy root that turns tender and sweet as its sugars caramelize in the oven.
Tomatoes
Adds acidity and moisture that brightens the rich lamb and pan juices.

The step that matters

Basting and turning during the 45-minute roast. Turning and basting redistribute heat and juices so the lamb cooks evenly and the surface browns without drying out.

Swap the onion

How well each one fits the dish's main ingredients (lamb, jerusalem artichoke, parsnip, turnip, pepper, butter, sherry):

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

Fit is the average pairing score against lamb, jerusalem artichoke, parsnip, turnip, pepper, butter, sherry. 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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