Carré d'Agneau Rôti — French-Trimmed Roast Rack of Lamb

Ingredients

• 1 (8-rib) rack of lamb, French-trimmed: bones scraped clean over the last 4–5 cm, fat cap scored in crosshatch 3 mm deep at 1 cm intervals
• to taste fine salt, applied 30 minutes before cooking
• to taste black pepper, freshly ground
• For the persillade crust
• 2 tbsp Dijon mustard
• 1 clove garlic, minced
• 30 g fresh breadcrumbs
• 20 g flat-leaf parsley and thyme, finely chopped
• 20 g unsalted butter, melted, to bind the crust
• For the jus
• 200 ml lamb stock
• 1 sprig rosemary

Method

1. 1
   Using a sharp boning knife, remove all meat and fat from the last 4–5 cm of each rib bone. Scrape the exposed bones absolutely clean with the back of a knife — no fragment of tissue should remain. Score the fat cap in a crosshatch pattern, cuts 3 mm deep and 1 cm apart. Season the rack generously with salt and pepper. Set aside for 30 minutes at room temperature. The surface of the meat should appear slightly tacky where the salt has begun to draw moisture.
2. 2
   Combine the Dijon mustard, minced garlic, breadcrumbs, and chopped herbs. Pour in the melted butter and mix until the crumbs are evenly coated. The mixture should hold together when pressed but not be wet. Set aside.
3. 3
   Heat a heavy ovenproof pan over high heat until smoking. Place the rack fat-cap side down and sear for 2–3 minutes without moving it. Turn and sear the meat side for 1 minute. The fat cap should be deep golden and beginning to render; the meat side should show a firm brown crust.
4. 4
   This is where the dish lives or dies: remove the pan from the heat, allow the surface to stop steaming briefly, then press the herb-crumb mixture firmly and evenly onto the fat cap. The mustard acts as the adhesive; press with a flat hand so the crust adheres without gaps. If the crust is applied to a wet or steaming surface, or before searing, it will fall away in the oven.
5. 5
   Cover the exposed bone tips with foil. Roast at 200 °C for 15–18 minutes for medium-rare. The internal temperature at the eye of the loin should register 52–55 °C. The herb crust should be golden and fragrant; the kitchen will carry the scent of toasted breadcrumbs and fresh herbs.
6. 6
   Transfer the rack to a warm board and rest for 10 minutes. Carryover will raise the internal temperature by 3–4 °C. The juices should settle back into the muscle; when the meat is pressed lightly with a finger, it should feel just yielding rather than firm.
7. 7
   Deglaze the roasting pan over medium heat with the lamb stock and the rosemary sprig, scraping up any rendered fat and caramelised solids. Reduce until the jus coats a spoon lightly. Taste for salt. Discard the rosemary.
8. 8
   Carve between each rib bone into individual cutlets. The eye of the loin should be uniformly pink with a thin brown outer crust; the herb coating should be intact, golden, and fragrant. Arrange on warmed plates and spoon the jus alongside.