Preheat oven to 325 F. Place the ham in a roasting or large baking dish. Pour 1/2 cup of the cooking sherry wine over the ham. Bake for 1 hour.
While the ham is baking, prepare the Sherry Glaze by combining the 2 jams, honey, a dash of nutmeg or cinnamon and the other 1 cup of sherry wine. Bring to bubbling and whisk in the cornstarch. Stir constantly until sauce thickens in a minute or two.
Spoon about 1/2 cup over the top of the ham in the oven when it has about 20 minutes left to bake. Reserve remaining sauce to use as topping for the ham on each plate.
Serve Ham with Sherry Glaze for your holiday feast.