Combine saffron & lemon juice; let stand about 5 minutes. Drain,
reserving lemon juice. Set aside saffron threads & lemon juice.
Discard giblets & neck of chicken. Rinse under cold water & pat
dry. Place chicken, breast side up in a shallow baking dish coated
with cooking spray. Cut 2 (1/2" deep & 1" long) slits in each
chicken thigh & breast. Pour reserved lemon juice into slits. Cover
& marinate in refrigerator 30 minutes. Combine reserved saffron,
coriander seeds, gingerroot, cumin, garlic & 1/2 c yogurt into food
processor. Process until smooth. Transfer mixture to a bowl. Add
remaining yogurt & crushed chile, stirring well. Spread yogurt
mixture over chicken; cover & marinate in refrigerator 1 hour.
Remove chicken from marinade, reserving marinade. Place chicken,
breast side up, in a shallow roasting pan; spoon reserved marinade
over chicken. Bake at 400 F for 15 minutes. Reduce heat to 350 F &
bake an additional 1 to 1-1/2 hours or until drumsticks are easy to
move & juices run clear. Let stand 5 minutes.