NOTE: For 6 people: 4 1/2-lb (2 kg) roast, cooking time at 500°F
(260°C) = 25 minutes
For 10 to 12 people: 8-lb (3.6 kg) roast, cooking time at 500°F
(260°C) = 40 minutes
For 14 to 16 people: 11-lb (5 kg) roast, cooking time at 500°F
(260°C) = 55 minutes
Makes 6 servings.