Sirloin of Beef (Relevé)

Aloyau de Bœuf en Relevé (whole sirloin served as the substantial meat course) teaches the hardest lesson in roasting: the more valuable the joint, the less you should meddle with it. This cut carries the fillet beneath the bone and the contrefilet above it. Roast it whole, stop while the center is still rosy, and let the rest finish what fierce heat began. Braise a lean sirloin and it pays your patience back with dryness.

The original joint fed a dining room and arrived from the butcher already shortened at the flank, with the ligament beside the chine sectioned for clean carving and the upper fat left intact. Behind it stood the brigade: a saucier with stock never off the fire, separate hands for a great Richelieu, Provençale, or Godard garniture, and a salamander ready to give the garnish its last color. For four, ask for a small bone-in short-loin section with both muscles attached, strengthen good unsalted stock with gelatin only if it lacks body, roast potatoes in the beef drippings, and glaze shallots while the meat cooks. Those elaborate garniture stations are brigade scaffolding; the whole roast, its underdone center, and the jus built from its fond are the dish. One cook, one stove, one evening.

At the table, the fat cap should be Maillard bronze, the fillet tender and rosy, the contrefilet deeply flavored, and the jus clear enough to run but glossy enough to cling. The one step that decides everything is the temperature reading: place the thermometer in the deepest part of the contrefilet, away from bone, and pull the joint before it looks fully done.