Make bouquet of onions, cinnamon, cloves, 8 peppercorns, 4 cardamoms, and coriander.
Put bag of spices in a pan, add meat, salt and enough water to cover. Cook until water reduces to half. Remove bag of spices and squeeze out the flavor. Add the sugar and juice from 1/2 lemon; cook until liquid is syrupy.
In an another pan boil the rice in water with the remaining spices and some salt until barely tender; drain.
In a casserole put a layer of rice, then the meat, then remaining rice.
Pour saffron milk over top, sprinkle with nuts, cover tightly, bake like pullao (~350 F for 30-45 minutes).