Preheat the oven to 325°F and set the ham cut side down in a roasting pan. Pour the water into the bottom of the pan.

Cover tightly with foil and bake for 1 hour 15 minutes, about 15 minutes per pound, until a thermometer inserted near the center reads 120°F.

Combine the brown sugar, honey, mustard, vinegar, cinnamon and cloves in a saucepan over medium heat. Simmer, stirring often, for 4 to 5 minutes, until the glaze coats the back of a spoon.

Remove the foil and brush half the glaze over the ham, working it between the spiral slices.

Increase the oven to 400°F and bake uncovered for 15 to 20 minutes, basting with the remaining glaze every 5 to 7 minutes, until deeply caramelized and the thermometer reads 140°F.

Rest, loosely tented with foil, for 15 minutes before slicing along the pre-cut lines.