As a friend was in the process of building her bar, I started making jokes about needing carrot ale. As she finished The Stolen Chair, I got to thinking that a brewing skill would actually be nice. Not just for something like carrot ale, but maybe salmonberry wine, among others as more plants are added.
As for what purpose the drinks would serve, maybe some kind of small temporary buff of some sort depending on the drink?
As a side note; Farmable cacti for the desert would be nice, along with being able to brew it into something like mezcal.