Given the task definition and input, reply with output. In this task, you have to identify the named entities (NER) which are the ingredients required given its directions. Named entities are the names of the items without their quantity.

Take chicken and pound each piece., Then place on grill, grill almost done and cut., Grill on low, then pour 1 tablespoon A.1. sauce on each piece of chicken., Then place mushrooms on top of sauce and put cheese on top of that., Cut off grill, close top, let cheese melt and then serve.
chicken breasts, mushrooms, sauce, Mozzarella cheese