Preserved Brewfest Hops

Preserved Brewfest Hops provides a buff which converts your mount into the Brewfest mount associated with your faction. Duration: 1 hour. Unlike other "Fresh" Brewfest Hops items, Preserved Brewfest Hops do not disappear when Brewfest ends.

Source
Preserved Brewfest Hops is purchased from the Brewfest Token vendors for a cost of. These are only available during Brewfest, the Brewfest Tokens required to purchase them disappear when Brewfest ends.

Use
Using a Preserved Brewfest Hops puts a buff on your character which converts your mount into a Swift Brewfest Ram for Alliance characters or Great Brewfest Kodo for Horde characters. The buff is on you, not on the mount; if you switch mounts, the buff is still active. The duration of the buff is one hour.

Achievement
Use of this item satisfies the achievement if you have riding training. You do not have to have a mount, nor use a mount, nor have a mount actually converted; the achievement procs as soon as you use the hops. This item allows you to pre-buy the ability to easily proc this achievement, if you are not yet level 20 during Brewfest.