Step 1
Place chipotle peppers brown sugar pineapple nutmeg ginger and bourbon whiskey in a blender and blend until smooth.
Step 2
Use a sharp knife to make diagonal cuts in the ham about 1 inch apart and 1/2 inch deep in a diamond pattern. Place smoked ham in a large bowl; pour the chipotle marinade over the ham and refrigerate ham in marinade for 3 to 6 hours turning ham occasionally in the marinade to flavor all sides.
Step 3
Preheat oven to 375 degrees F (190 degrees C).
Step 4
Remove ham from marinade reserving the marinade; place ham into a roasting pan.
Step 5
Roast in the preheated oven for 30 minutes.
Step 6
Bring the marinade to a boil in a saucepan over medium heat. Whisk cornstarch and water together in a small bowl until smooth; whisk the mixture into the hot marinade. Reduce heat to low and simmer until thickened about 5 minutes.
Step 7
After ham has baked for 30 minutes spoon the hot marinade over the ham.
Step 8
Return ham to oven and continue baking until glaze is baked onto the ham and an instant-read thermometer inserted into the thickest part of the ham not touching bone reads at least 145 degrees F (65 degrees C) about 1 1/2 more hours. Baste ham with the glaze every 30 minutes.