Succulent Baked Ham with Brown Sugar Glaze

My Aunt Christina always makes the most SUCCULENT hams I have ever, EVER tasted. This Thanksgiving she gave me her recipe. Now I am sharing it with you. You're welcome in advance, because, trust me, once you've tried this—you WILL thank me.

1 (10-pound) cured ham, not pre-sliced
1 cup firmly packed light brown sugar
1/2 tsp ground mustard
1/4 cup white vinegar

Directions:
Preheat oven to 325 degrees
In a roasting pan, place ham cut side down onto a sheet of aluminum foil. Score the skin fat making a diamond pattern and bake, covered tightly with foil, for 10 minutes per pound.

In a small bowl combine brown sugar, ground mustard and white vinegar.
**15 minutes before end of bake time spread glaze evenly over ham and bake uncovered for remaining 15 minutes.Transfer ham to a platter and let stand 15 minutes before carving.

**Optional:
Pin orange or pineapple slices to outer surface with toothpicks.