MachacaMexican sun-dried beef, called machaca or carne seca, is made in the dry desert regions of northern Mexico, especially in the state of Sonora. It's not practical or safe for most home cooks to dry meat in the sun, so here is a very good oven-made substitute to use for tacos, burritos, with eggs or potatoes, in salads, and more. It's even good just to nibble on with chips and guacamole.