Measure used in medical quality management whereby obvious or elusive causes that may lead to adverse outcomes or patterns of suboptimal outcomes are sought and analyzed to correct faulty processes.
1 Cut two pieces of aluminum foil, each 24 inches long, and set aside.  Toss the potatoes, onions, parsley, oil, garlic, salt, and pepper in a large bowl. Place one half of the potatoes in the center of one foil strip and fold the right and left sides of the foil in toward the center to cover the potatoes.
Preheat an outdoor grill for medium-low heat. Prepare four foil squares large enough to fold over one potato each. Spread butter onto foil in a large enough area that the potato will be completely covered when rolled up. Sprinkle salt, garlic, pepper, and Italian seasoning evenly over foil. Roll each potato in the foil; puncture the package (including the potato) with a fork or knife a few times. Grill for 1 hour, or until soft, turning the potatoes often. Serve with your favorite toppings.