Given the task definition and input, reply with output. 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.

Combine sugar and cocoa in a bowl; mix well, Add butter and eggs; beat well,______, Pour into pie shell and bake at 350 for 35 to 40 minutes or until set,
Stir in milk and beat all ingredients until well blended