Famous Christmas Ham(Great Anytime)

For slow even cooking, prepare grill by placing charcoals along 2 sides, leaving the center open.

Trim all excess fat from ham; place ham on grill and cook covered for 1 hour. Mix equal portions of prepared mustard, currant jelly and brown sugar in a saucepan over medium heat; stir until becomes a clear liquid. Baste ham every 15 minutes for the last 1 to 1 1/2 hours, depending on size of the ham.