01 - Preheat oven to 325°F. Position ham flat side down on rack in large roasting pan. Score surface in diamond pattern with shallow cuts 1/4 inch deep.
02 - Cover ham loosely with aluminum foil. Bake for 1 hour.
03 - Combine brown sugar, Dijon mustard, whole-grain mustard, honey, apple cider vinegar, and ground cloves in small saucepan. Heat over medium heat, stirring until sugar dissolves and glaze is smooth. Remove from heat.
04 - Remove foil from ham after first hour. Brush half the glaze evenly over ham surface.
05 - Continue baking uncovered for 45–60 minutes, basting every 15–20 minutes with remaining glaze until ham is caramelized and heated through. Internal temperature should reach 140°F.
06 - Remove ham from oven and let rest for 15 minutes before slicing. Serve warm.