Hammer the chicken breasts and then add in 1 tbsp white vinegar and some salt. Marinate it for some time. Add in 1 cup bread crumbs, ½ cup chopped walnuts, 2 tbsp flour, 1 cup corn flour and 1 tspcrushed black pepper in a mixing bowl. Dust the chicken in the dry mixture, dip it in two egg whites and then again cover it with the dry mixture. Heat the frying pan or grill pan and grease it and cook the chicken on a low flame. Cook it from both the side till they are golden brown. Serve it with chili garlic sauce.