After basting, there will be approximately 3/4 cup of glaze for serving at the table with the ham. Should you wish to have more glaze, the glaze portion of the recipe may be doubled.
Preheat the oven to 300 degrees.
Place the ham cut side down in a roasting pan and add water ¼ inch deep. Tent the ham with foil, wrapping the foil over and crimping it down on the pan sides to enclose it fully; place in the oven.
Cook until the ham registers 100 degrees when measured at the thickest part; about 2 hours to 2 ½ hours.
Return the ham to the oven and bake uncovered for 20 minutes.
Remove from the oven and allow to rest for 10 minutes before serving.