Were you looking for the NPC in Hellfire Peninsula,  Barley <Wind Rider Master>?

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• Barley
• Cooking Ingredient
• Item Level 85Disenchants into:
  Not disenchantable
• Sell Price: 30
• Vendor 1 20

This item is a  [Cooking] ingredient.

Reagent for

• [Roasted Barley Tea]

Source

•  Sungshin Ironpaw <Guide to the Ways> (Halfhill Market, Valley of the Four Winds)
•  Jojo <Cooking Supplies> (Shrine of Seven Stars, Vale of Eternal Blossoms)
•  Barleyflower <Cooking Supplies> (Shrine of Two Moons, Vale of Eternal Blossoms)
•  Stephen Wong <Cooking Supplies> (Shrine of Two Moons, Vale of Eternal Blossoms)

Patch changes

• β Patch 5.0.1 (Beta): Added. 
  

External links

• Battle.net (EU)
• Wowhead
• Thottbot
• WoWDB