Preheat the oven to 325°F
Place the ham in a roasting pan
Add a little water to the bottom of the pan
Cover the ham tightly with foil
Heat until the internal temperature reaches 140°F
Allow about 10 to 15 minutes per pound
Baste occasionally if desired
Remove the foil for the last 15 to 20 minutes if glazing
Let the ham rest for 10 to 15 minutes before slicing