Place rib roast on a rack in an oven-roasting pan. Season with salt and pepper and drizzle with olive oil.
Roast in a preheated oven at 160°C for 20 – 25 minutes per 500 g, plus an additional 20 minutes for medium-done. Add vegetables to roast with sprigs of rosemary.
Basting: Mixall ingredients together and brush roast occasionally during roasting.
Roast beef rib until done, remove from pan and leave in a warm place for about 10 minutes before carving.
Add stock to pan, bring to the boil and thicken with a paste of flour and water. Serve roast with vegetables and gravy.