Murtlap tentacle

A Murtlap tentacle is a rare potion ingredient that can be obtained from a Murtlap. When a Murtlap tentacle is eaten, they heighten resistance to curses and jinxes, but an overdose has the side-effect of purple ear-hair. It could be used in the creation of the Murtlap Essence.

Appearances

 * Fantastic Beasts and Where to Find Them
 * Pottermore