Mutton and Lamb Roasts

Rôtis de Mouton et d’Agneau (mutton and lamb roasts) teach the first law of roasting: cook the joint to its center, not to a timetable. Dry heat can bronze almost anything, but only a thermometer and a proper rest give you the rosy, juicy slices that make the carving board go quiet.

The original entry assumed a turning spit, a cook free to baste, and banquet joints such as double hind legs or a baron. Its alternate Poëlings (No. 250) assumed a saucier and stock never off the fire. At home, one bone-in half-leg sits neatly on a roasting rack, an instant-read thermometer judges the center, and the broiler takes the salamander’s coloring duty only if needed. The banquet scale is scaffolding and goes; the fierce opening heat, gentler finish, patient rest, and Mint Sauce (No. 136) stay because they are the dish.

You’ll have a darkly burnished joint, a rosy center, and clean meat juices shining across each slice. Take the roast from the oven by temperature, then leave it untouched for twenty-five minutes. That rest is the step that matters most.