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.

Mix melted margarine, poppy seed, Worcestershire sauce, mustard and onion flakes together., Put margarine mixture in refrigerator until semi-hard., While mixture is in refrigerator, slice rolls lengthwise., Layer ham and cheese on bottom layer of rolls., Replace rolls in tray (I buy the rolls in the foil-type tray)., Divide margarine in half (using half for 1 pack of rolls) and spread on top of layered ham and cheese., Replace tops of rolls., Cover and bake 15 minutes at 350.
dinner rolls, ham, Swiss cheese, margarine, poppy seed, Worcestershire sauce, mustard, onion flakes