Allow ⅓–½ lb per serving for bone-in ham and ¼–⅓ lb per serving for boneless ham.
Heat oven to 325°F.
Place ham, fat side up, on a rack in a shallow roasting pan. Insert a meat thermometer so the bulb reaches the center of the thickest part of ham but does not rest in fat or on bone.
To glaze baked ham, pour drippings from the pan and discard drippings. If necessary, trim fat, leaving only a thin layer on the ham. Score ham by cutting diamond shapes about ¼ inch deep through the fat. If desired, insert 1 whole clove in each diamond. Spoon desired glaze over ham.
Return to oven and bake an additional 15–20 minutes.