Preheat the oven to 325 F.

Score the surface of the ham in a diamond pattern about 1/8-inch deep. Place cloves in the middle of each diamond. Bake the ham for 2 to 2/12 hours, or longer, depending on the package directions.

Heat the brown sugar, mustard, vinegar and soda in a small saucepan until bubbly. Cook until thick, about 15 minutes.

After 2 hours of baking time, brush the glaze on the ham in 20 minutes intervals until it's nice and glossy.