Roast Crisped-Skin Turkey
4 C kosher salt or 2 C table salt 1 turkey (12 to 14 lb gross weight), rinsed thoroughly; giblets, neck, and tailpiece removed and reserved for gravy 3 medium onions, chopped coarse 2 small carrots, chopped coarse 2 celery ribs, chopped coarse 6 sprigs fresh thyme 6 T unsalted butter, melted