Put tenderloin, Sukiyaki Sauce, onion and garlic in large, zip-lock bag and let marinade for a least 4 hours.<BR><BR>Barbecue using coals and water soaked hickory, apple or cherry chips until done. To cook well done, barbecue until tenderloin is firm to the touch.<br><br>Serve with baked potatos and sour cream, and green vegetables of your choice.<br><br>This also makes great sandwiches the next day.