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 soy sauce, liquid smoke, garlic salt and Worcestershire sauce in medium size bowl., Cut meat in thin slices when half frozen., Lay slices of meat in bowl until thawed., Add mixture. Let stand for about 1 to 2 hours, longer for stronger taste.
beef, soy sauce, liquid smoke, garlic, Worcestershire sauce