Creative Juice
Creative Juice, or the "Creative Juices" was a drink served by Granny Smith.
When Sunset Shimmer told Pinkie Pie she had to get the "creative juices" flowing, she took it literally and ordered the drink at the Cafeteria. When she was disapointed by the effects of the juice, she questioned if it was the "actual" creative juices, to which Granny Smith simply looked at her confused.