i was thinking of brewing. (ie you would be able to make ur favorite ale's, fine wine, and other asorted beverages)
the mats could be obtained in a similar fashion to that of the quest in Shalozar. in which u pull the vine and fruit falls down. u can use the fruit to make the drinks. also u could get a ability to search for specialty plants like hops and stuff for beers and ale's.
drinking it would give u Well Quenched buff.. like the well fed buff from eating food