Premium Potatoes are items which can be used to fully restore all of a player's attack and defense points. They are bound to the player they were awarded to, and cannot be traded or gifted to another player. As well, their is no way to unbound them.
The equivalent of Power Potion (Bound).
These can only be obtained as rewards for participating in the The Floating Goliath Raid Event. Available from December 1, 2014 to December 5, 2014.