Machaca is a flavorful combination of shredded beef, eggs, onions, tomatoes and peppers. In Mexico, machaca is made from sun-dried meat. The cattlemen of the north made meat easy to carry on the trail by drying it. Tastier than beef jerky, the meat was first marinated, then cooked, shredded and dried. It can be served in tacos, burritos and in scrambled eggs.