Annealed Honey Amulet

Annealed Honey Amulet is an amulet belonging to Rosaline Mildenhall who may be found at the following points throughout Tiragarde Sound:
 * Scribes & Nobles in Boralus
 * Bridgeport

This item starts a short quest chain that eventually awards the Large Honeycomb Cluster, which summons the companion pet Bumbles.

Source
This item rarely drops for Alliance players only from the following mobs after completing the Mildenhall Meadery storyline (ending with Back to the Lab) in Stormsong Valley:
 * Bubbling Mead
 * Bumbling Bee
 * Flowing Honey

Additionally, should Beehemoth be up, it has a high if not 100% chance to drop.