Steak with Sauce Bordelaise

Everyone should know how to make a wine reduction sauce. This preparation also uses reduced beef stock, because I wanted to slip in my One-Hour Beef Stock method. Which of course required that I discuss bone broth, which has become such a fad there are whole retail stores devoted to it in my New York City neighborhood. Sauce bordelaise includes sautéed mushrooms, so it’s great with any sautéed steak cut—strip, hanger