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.
1 Evenly divide the mixture between 4 large sheets of aluminum foil. Top each with another sheet of foil, and roll up the edges tightly. Wrap each packet again, securely in another sheet of foil to double wrap.  Cook in the hot coals of a campfire until the chicken is opaque and the potatoes are tender, around 40 minutes.