orange lacquered duck

combine first 4 ingredients in a saucepan.
boil until reduced to 3/4 cup.
set aside.
meanwhile boil yams in water until almost fork tender, 15 minutes.
cool, peel, and cut into 1/4" slices.
in a skillet sear duck, breast side down until brown.
flip duck, add yam slices and add oj reduction.
cook 8 minutes more or until liquid is reduced by half.
in a separate pan saute bok choy in sesame oil for 1-2 minutes.
to serve: fan duck breasts over yams, with bok choy.
drizzle with pan juices.