Goutweed Tuber

A Goutweed Tuber is an item obtained My Arm's Big Adventure quest. Not to be confused with Goutweed Tubers, however.

After obtaining 60% in the Tai Bwo Wannai Cleanup Minigame, Murcaily will give you a Goutweed Tuber. After a short cutscene, involving My Arm going on a rampage, Murcaily will replace it with several Goutweed Tubers.