How long does it take to cook a kilo of lamb?
1kg – 1 hour 15 minutes. 1.5kg – 1 hour 40 minutes. 2kg – 2 hours 5 minutes. 2.25kg – 2 hours 30 minutes.
How long does it take to cook 1.4 kg of lamb?
For a 1.4kg leg, roast for 11/4 hours for medium or until lamb is cooked to your liking (see tip 2).
How does lamb need to be cooked?
For most cuts, including roasts, such as leg of lamb (boneless or bone-in), shank half, shoulder, rib roast or crown roast, use an oven temperature of 325 degrees. Use a meat thermometer for best results. An internal temperature of 140 degrees is considered rare, 160 degrees is medium and 170 degrees well done.