how long to cook 1.4kg lamb for
For the best roast Medium leg of lamb cook for 25mins per 450g, +25 mins. Do 5mins less/450g for rare.1.4kg = 1hr 40 mins or 1hr 25 mins for rare.or the best roast Medium leg of lamb cook for 25mins per 450g, +25 mins. Do 5mins less/450g for rare.