• Chef's Hat
• Item Level 1Disenchants into:
  Not disenchantable
• Binds when picked up
• Head
• Equip: Allows you to cook faster.
• 
• Vendor 100

Source

This item is sold by the following vendors for 100 :

•  Derek Odds <Cooking Supplies> in Dalaran.
•  Misensi <Cooking Supplies> in Dalaran.
•  Mera Mistrunner <Cooking Supplies> in Icecrown.
•  Katherine Lee <Grand Master Cooking Trainer> in Dalaran

Achievement

Acquiring this hat satisfies the  [Cooking With Style] achievement.

Notes

• The speed increase is 300% (casting time decreased by 75%); normal cooking speed is 2 seconds, and with the hat it drops to 0.5 seconds.

Patch changes

• Patch 3.2.0 (04-Aug-2009): Chef's Hat is now superior quality and allows the chef to cook faster. 
  
• Patch 3.1.0 (14-Apr-2009): Added. 
  

External links

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