In a small skillet or sauce pan, combine glaze ingredients and simmer until reduced by half. (roughly, don't get too worked up, you just want a light syrup)
Strain to remove cloves and garlic (if desired)
Preheat Grill to medium/high.... pat ham steak dry with a paper towel.
Brush ham steak with glaze then grill... brushing with glaze and flipping as needed until ham has pretty grill marks and is heated through. (Honestly, I have no idea how to give ham steak grilling instructions, just grill and baste, grill and baste, personally my favorite part is those black burnt fatty edges)
Transfer ham to a serving plate and brush with remaining glaze. Enjoy all the deliciousness.