Preheat oven 350°
Peel skin from ham using a sharp knife score the fat in a diamond pattern about 1 1/2”
Line a shallow pan with aluminum foil & place ham in the pan on top of 4 onion halves. Insert a whole clove in each intersection. of the diamonds. Pour apple cider into the pan.
Bake 2 hour, basting frequently. It should be 135° when removed from the oven & 140° after resting for 15 minutes.