Remove roast from bag, reserving marinade. Place roast fat side up, on a rack in a shallow roasting pan. Insert a meat thermometer. Roast in a 350-degree oven for 1 1/4-2 1/4 hours for medium (160-degrees), or 1 1/2- 2 1/2 hours for well-done (170-degrees), brushing with marinade occasionally. (Do not brush with marinade during the last 5 minutes of roasting.) Cover with foil and let stand 15 minutes before carving.
Serves 8 to 10