|Charm to Cure Reluctant Reversers|
Grasp your broom firmly by the tail
Enhances a broom's ability to reverse
The Charm to Cure Reluctant Reversers (incantation unknown) is a charm used in broom care, which presumably enhances a broom's ability to reverse. It was covered on page twelve of the Handbook of Do-It-Yourself Broomcare.
- Harry Potter and the Prisoner of Azkaban (First mentioned)