The late, great James Beard recommended a 3-inch-thick sirloin for this hearty recipe, but we prefer to use a 1-1/2-inch-thick steak, which gives us more surface area on which to spread the Roquefort. Jim also reccommended a baked potato and a "lusty red Burgundy" and we can't argue with that. The watercress salad, which is our creation, pairs the Roquefort with pears and walnuts, two favorite accompaniments for blue cheese. The sharp watercress and tart but sweet vinaigrette complement the rich beef and Roquefort very well.