Ogre Tannin

Ogre Tannin gives the Gordok Ogre Suit its color and is used to complete a Dire Maul tribute run in Dire Maul North.

Note
As soon as you grab the Tannin, a Gordok Bushwacker will appear and start attacking you, so be prepared.

Alternate source
If you find a Gordok Shackle Key you can do the repeatable quest Free Knot! and set Knot Thimblejack free. There is a chance that one or two ogre Tannin will be in the crate that appears.

Use
Ogre Tannin is required to make the Gordok Ogre Suit, the reward from the quest The Gordok Ogre Suit. A leatherworker or tailor can learn to make the suit on their own by completing the quest once.

Trivia
When you grab the Ogre Tannin, an ogre screams say which is a reference to the serial killer "Buffalo Bill" from Silence of the Lambs, lowering a bucket down the well to his victims and saying "It rubs the lotion on its skin, or else it gets the hose again."