Finish the following sentence with the best choice: how to thicken a milkshake

Choices:
- once everything is blended, stick the blender top (not the motor) into the oven for 1-2 hours and then re-blend.
- once everything is blended, stick the blender top (not the motor) into the freezer for 1-2 hours and then re-blend.

Answer:
once everything is blended, stick the blender top (not the motor) into the freezer for 1-2 hours and then re-blend.