Instructions

  1. Preheat grill to medium.
  2. In a small saucepan stir together the ketchup, brown sugar, soy sauce, gingerroot, garlic and dry mustard; bring to a boil.
  3. Set aside a 1/4 cup of the sauce in the refrigerator.
  4. Prepare grill for indirect cooking.
  5. Cook tenderloin, covered for 20 minutes; brush with the sauce.
  6. Grill 15-20 minutes more or until meat thermometer reaches 160 degrees F. Slice and serve with reserved sauce.