1 tablespoon vegetable oil
1 large onion, sliced
2 medium heads cabbage, shredded
1 medium potato, diced
10 skinless, boneless chicken breast halves
1 tablespoon Worcestershire sauce
1 tablespoon prepared yellow mustard
4 large corn tortillas
1 1/2 pounds shredded lettuce
Place oil, onion, cabbage, potato and chicken in large saucepan over medium heat. Saute for 6 minutes. Remove from heat; stir in Worcestershire sauce. Cook, stirring, for 5 minutes.
Stir the Worcestershire sauce mixture into the onion mixture and stir well. Simmer over medium heat for 3 minutes. About 1/4 cup hot liquid may be used to grease 5 plates, depending on size.
Cut each plate into 6 wedges. Place 2 chicken cubes on each wedge of lettuce. Top with the mustard mixture and then place burger rings on top. Dust with grated cheese, lettuce is optional. Serve warm or cold.