Preheat the oven to 275°F
Remove the ham from packaging
Place the ham in a baking pan
Add a little water to the bottom of the pan
Cover the ham tightly with foil
Heat for about 10 minutes per pound
Remove the foil during the last 10 to 15 minutes if you want to re-crisp the glaze
Check that the internal temperature reaches 140°F
Let the ham rest before slicing