Wash the meat, dab dry. Bring the stock to the boil. Cook meat in it for about 30 minutes.
Meanwhile drain the beans and corn, rinse with cold water and drain. Clean the salad, wash and spin dry. Wash tomatoes, grate them dry, cut them into quarters and remove the seeds. Dice flesh.
Grate the cheese roughly.
Drain the meat, drain and let it cool down for about 10 minutes. Cut into cubes. Rinse lime hot, grate dry and cut into slices. Arrange salad on plates. Arrange corn, beans, meat, cheese, salsa and chips on top.
Garnish with sour cream. Add lime wedges.