Heat the oven to 225°F and warm an ovenproof platter. Rub the steaks with salt. Sprinkle with the peppercorns and use a meat pounder or the bottom of a pot to lb the pepper into the steak. Turn the meat over, and repeat the seasoning on the other side. Heat the butter and oil in a heavy skillet and sauté the steaks about 4 minutes on each side. Transfer to the warm platter. Add the bourbon and 2 tablespoons water to the skillet and cook rapidly, stirring and scraping, to incorporate the bits of meat and fat in the pan. Boil down for 1 minute and spoon the sauce over the steaks.