Preheat the oven to 325°F (165°C). Place the ham in a roasting pan and pour 2 cups of water into the bottom of the pan. Cover the pan with foil and bake for 2 hours.
Meanwhile, make the glaze. In a small pot over medium heat, combine honey, marmalade, vinegar, tamari, mustard, and butter. Bring to aboil, then reduce heat to simmer while whisking, and cook until thickened, 5-7 minutes. Remove from heat.
Remove the ham from the oven and discard the foil. Increase oven heat to 425°F (220°C). Brush half of the glaze onto the ham, reserving the remaining glaze. Return the ham to the oven and bake for 20-30 minutes, or until golden brown and sticky.
Serve the ham with the remaining glaze on the side. Leftover ham can be refrigerated for up to 3-5 days.
SAN-J Tamari Soy Sauce and No Soy Tamari are swappable! To make this gluten-free recipe also soy-free, use SAN-J No Soy Tamari.
* The Gluten Free recipes that appear in this website incorporate a variety of San-J's products that are Certified Gluten Free. Please be sure to consider the other ingredients to make sure they comply with your dietary needs and restrictions.