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.
Q: Grease a 15x10x1-in. pan with 2 teaspoons butter; set aside., In a large heavy saucepan, combine sugar and cream of tartar; stir in cream and remaining butter. Cook and stir over medium heat until a candy thermometer reads 300 (hard-crack stage). Remove from the heat; stir in extract. Quickly pour into prepared pan. Let stand at room temperature until cool., In a microwave, melt chocolate chips; stir until smooth. Spread over toffee. Sprinkle with nuts. Let stand until set, about 1 hour. Break into pieces. Store in an airtight container.
A:
butter, sugar, cream of tartar, heavy whipping cream, rum, milk chocolate chips, mixed nuts