From Zelda Wiki.org
A nut that holds the balance of symmetry in
Symmetry Village, a small town in northern
Labrynna.
Veran attempted to destroy this village, a goal in bringing an Age of Sorrow, by cracking the nut in the past.
Link discovered the village ruined in the present and went to the past to collect the nut. He then took it to an eccentric man named
Patch to restore the nut to its former glory.
Link restored symmetry by placing the nut on its pedestal, which was within a building in the northern center of town.