|Prepare a grill.|
|Combine all the marinade ingredients.|
|Pierce the skin of the duck. Pour the marinade over the duck meat and cover. Refrigerate 4 hours or overnight, turning occasionally.|
|Remove the duck from the marinade and reserve the marinade for basting.|
|Place the duck skin side down and grill over a medium heat for 40 minutes, turning occasionally and basting with the marinade.|
Breast meat should cook until rare to medium pink on the inside, so it may require less time on the grill. Be careful not to over cook.