The maturity of steak is generally divided into three points, five points and seven points. As far as foreigners' eating habits are concerned, most people think that the best ingredient of steak should be medium-rare, tender and juicy, and the beef juice is properly preserved and tastes good. In western food, medium-rare is well-done, and the elderly and children prefer it. The most nutritious ingredient of beef is medium rare! Owen, the national senior western chef, will answer your questions!