Mixology is a trained passive ability available to Alchemists with 50 or more skill.
After training Mixology, any flask or elixir that can be created by the Alchemist has double duration (2 hours) when it is consumed by them. In addition, the effect is increased somewhat as well, with the amount of increase varying from item to item.
Patches and hotfixes
/ Patch 3.0.2 (14-Oct-2008): Added