Unroll roast, and trim fat. Reroll the roast, and secure at 1-inch intervals with heavy string. Rub surface of roast with vinegar. Make several 1-inch-deep slits in the roast, and stuff with garlic slices. Sprinkle salt and cracked black pepper over roast.
Place roast on a broiler pan coated with cooking spray. Insert meat thermometer into the roast. Bake at 350° for 2 hours or until meat thermometer registers 160°. Garnish roast with fresh herbs.