Barley

Barley can be purchased with from:
 * in the Shrine of Two Moons
 * in the Shrine of Seven Stars
 * in the Shrine of Two Moons
 * in the Valley of the Four Winds

Objective of

 * A stack of 20 can be placed into Bundle of Groceries for the quest Replenishing the Pantry.

Cooking

 * Roasted Barley Tea