Practical Alchemist

"Now you light it on fire and throw it. Thats what we call a Beggar's Nest Cocktail"

Your alchemical items use your DC instead of their normal (if it is higher). And you may learn ability focus for a specific alchemical weapon. In addition the duration of your alchemical items is heightens by one round if they are not instantaneous and you gain +2 on craft (alchemy) to create alchemical weapons