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.

Combine all ingredients in electric blender and process until smooth., Store in refrigerator until ready to use., Yields 1 1/4 cups or about the same as a 14 ounce can.
milk, boiling water, sugar, butter