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.

Thaw and parboil the broccoli and shock in ice water., Mix lowfat sour cream and chicken soup and pour over broccoli in an oven-proof casserole., S&P to taste., Cover top with bread crumbs or possibly crumbled corn flakes and place in medium (350f) oven, cook till topping is browned and contents are cooked, (15-30 min)., Best served warm.
Broccoli, sour cream, Cream of chicken soup