Cut the meat in very thin slices, at an angle, against the grain of the meat. (This way you break through the tough long muscle fibers.) Any juices that come out of the meat while cutting or resting, return to the pan. Return the pan to a burner on high heat and deglaze the pan with a little water, scraping up any browned bits. Once the water has mostly boiled down, add a little butter to the pan for a nice sauce. Arrange the cut meat on a serving plate and pour the deglazed pan juices over the meat.