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.

Line pan with heavy foil or wax paper., Combine butter, sugar, water & salt in heavy saucepan., Bring to a boil over medium heat, stirring frequently., Continue boiling about 20 minutes, stirring frequently, until hard crack stage (305-310)., Watch closely -- do not let get above 310., Immediately pour onto prepared pan & sprinkle with chocolate chips., Break into pieces & store in airtight container.
unsalted butter, sugar, water, vanilla, chocolate, bittersweet chocolate