Quarter of Lamb

Ingredients

Equipment Needed

• •Large covered oval roaster or heavy roasting pan, at least 16 by 12 in (41 by 30 cm), with tight-fitting foil if needed
• •Instant-read meat thermometer
• •Wide 12 in (30 cm) sauté pan with lid
• •3 qt (2.8 L) saucepan
• •Fine-mesh sieve and fat separator or shallow ladle
• •Sturdy carving board, carving knife, and carving fork

Instructions

1. 1

   Prepare the joint

   Take the lamb from the cold 45 minutes before cooking. Heat the oven to 325°F (165°C). Remove any wrapping, pat every surface thoroughly dry, and inspect the butcher’s work: the chine should be removed or cracked, the hip joint loosened, and the leg and loin tied into a compact joint. Season all over with the 2 teaspoons salt and the black pepper. Wet lamb sheds water into the pan and dilutes the butter, so do not hurry the drying.

   Measure your roasting pan before ordering the joint. Ask the butcher to keep the haunch intact but compact enough to sit inside the pan without touching its sides.
2. 2

   Begin the poêlé

   Melt the 6 tablespoons butter in the roasting pan over gentle heat, or melt it separately and pour it in if the pan cannot sit safely on the stove. Add the sliced onion, sliced carrots, and bouquet garni, turning them through the butter for 4 to 5 minutes without letting them color. Set the lamb on this aromatic bed with the fat side uppermost. Spoon butter over every exposed surface, cover the pan tightly with its lid or a sheet of parchment under foil, and place it in the oven.

3. 3

   Baste and bronze

   Roast the lamb covered for 80 to 90 minutes. Every 20 minutes, uncover it just long enough to tilt the pan and spoon the butter and lamb fat repeatedly over the leg and loin. The fat you baste with is what browns the surface and guards the meat. If the pan becomes dry, add 2 tablespoons of the warm stock at a time, using no more than ½ cup (120 ml) altogether. Raise the oven to 400°F (200°C), remove the cover, and roast for another 25 to 40 minutes, basting every 10 minutes. The fat should remain hazelnut-gold. If it turns black, lift the lamb out at once, discard the scorched fat and aromatics, wipe the pan, and continue with the reserved butter and ¼ cup (60 ml) stock. Ça se rattrape. You lose a little fond, not the dinner. Begin checking both muscles after 25 minutes. Probe the thickest part of the leg and the center of the loin without touching bone. If the loin cooks ahead, cover only that section with buttered foil. Remove the joint when its coolest reading reaches 140°F (60°C); carryover heat during the rest should bring it to at least 145°F (63°C).

   A quarter contains two muscles of different thickness. Trust the thermometer in both places, not the clock or the color of the juices.
4. 4

   Cook the new vegetables

   During the lamb’s final 45 minutes, place the new potatoes in a saucepan, cover them with cold water, and add 2 teaspoons of the vegetable salt. Bring them slowly to a bare simmer and cook for 15 to 20 minutes, until a knife enters without resistance but the skins remain intact. Drain and keep them covered. Put the baby carrots and turnips in a wide sauté pan with the 2 tablespoons butter, the sugar, the remaining vegetable salt, and enough water to reach halfway up their sides. Cover and simmer gently for 12 to 18 minutes. The vegetables should become tender without collapsing; lift out any smaller pieces as they finish.

5. 5

   Rest the lamb

   Transfer the lamb to a warm carving board or platter and cover it loosely with foil for 20 minutes. Do not wrap it tightly, or the burnished surface softens in its own moisture. Check the temperature after the rest; it should have reached at least 145°F (63°C). If it stops short, return the joint to a 375°F (190°C) oven for 5 to 10 minutes, then rest it briefly again. Pour every resting juice into the finished jus.

6. 6

   Make the clear jus

   Remove and discard the bouquet garni. Tilt the roasting pan and spoon away the surface fat, leaving the browned film and aromatic vegetables behind. Add the remaining warm lamb stock and set the pan over medium heat. If the pan is not suitable for the stove, add boiling stock, scrape thoroughly, and transfer everything to a saucepan. Bring it to a lively simmer while scraping up every bronze trace of fond. Simmer for 8 to 12 minutes, then strain through a fine sieve without pressing the vegetables, which would cloud the jus. Skim again and reduce to about 1 cup (240 ml), adding the lamb’s resting juices at the end. The jus should be clear, deeply savory, and just substantial enough to glaze a spoon. If it is greasy, let it stand for a minute and skim rather than whisking; if too strong, loosen it with warm stock, and if thin, reduce it further. No flour is needed because this version follows the source’s own-stock jus rather than its alternative thickened gravy.

   For a clear jus, skim patiently and never press the cooked aromatic vegetables through the sieve. Their flavor is already in the liquid.
7. 7

   Glaze the vegetables

   When the carrots and turnips are tender, remove the lid and let their cooking liquid reduce until the butter forms a bright glaze around them. Add the drained potatoes and peas with 2 to 3 tablespoons water, then turn everything gently over medium heat for 3 to 4 minutes. Stop as soon as the peas are tender and vividly green. If the glaze catches, loosen it immediately with a spoonful of water; patience, not scraping, preserves the vegetables.

8. 8

   Carve and serve

   Remove the strings. Slip a sturdy knife through the loosened hip joint to separate the loin from the leg, then carve the leg across the grain into broad slices and divide the loin between its ribs. Arrange the meat generously on a warmed platter with the glazed new vegetables around it. Spoon over enough clear jus to make the cut surfaces gleam and pass the rest at the table. Never apologize at your own table. À table!

Chef Tips

• •Order the lamb from a butcher and use the word haunch: one leg with half the loin attached. Ask for the chine bone removed or cracked, the hip joint loosened, and the whole joint tied compactly. This is not fussiness; it is what makes carving possible with a home knife.
• •Lamb stock keeps the jus faithful to the source. If it is genuinely unavailable, use a light, unsalted chicken stock. The sauce will be gentler and less distinctly lamb-flavored, but its structure and clarity remain sound.
• •New vegetables are part of the dish’s character. In spring, use the smallest potatoes, carrots, turnips, and fresh peas you can find. Outside their season, frozen peas are the honest choice; they were picked tender, while old fresh peas become starchy.
• •Reserve judgment on the seasoning until the jus has reduced. Salt concentrates with the liquid, and a sauce seasoned early can become harsh before it acquires body.
• •A supple red Bordeaux or northern Rhône suits the sweet young lamb without smothering it. Serve the jus separately as well, because someone at the table will want another spoonful.
• •Refrigerate leftover lamb and jus separately within 2 hours. They keep for up to 3 days; reheat slices gently in a covered pan with a spoonful of jus so the loin does not dry out.

Advance Preparation

• •Order the butcher-prepared hindquarter 1 to 2 days ahead and confirm that it fits your roasting pan. Keep it covered in the cold until 45 minutes before cooking.
• •The lamb stock can be made up to 3 days ahead or frozen earlier. Warm it before it reaches the roasting pan so it does not halt the cooking.
• •Scrub and trim all the new vegetables on the morning of the meal. Keep the potatoes submerged in cold water and the remaining vegetables covered in the refrigerator, then cook them while the lamb finishes.
• •The lamb can rest for 30 minutes if the rest of dinner runs late. Keep it loosely covered and make the jus during that window; give the joint 5 minutes in a 400°F (200°C) oven before carving if its surface needs refreshing.

Frequently Asked Questions

Nutrition Information

1 serving (about 800g)