You will be given a definition of a task first, then some input of the task.
In this task, you will be presented with the directions of a recipe separated by "," and have to fill in the "___" which is a step that is missing from the recipe.

Cream sugar and butter or margarine.,______,Add cream and vanilla to this mixture, and blend well.,Pour mixture into 9 inch pie shell. Bake at 350 degrees F (175 degrees C) for 45 minutes, or until set and brown on top.
Output:
Add eggs one at a time, and mix well.