For the 2011 edition of Green Feather, STK GbR is merely the distributor (Vertrieb).
For the 2012 edition, the law will likely see us as ‘bottler’ (Abfueller). While we do all the work on our 750m2, we might want to add, say, 2% of a grape juice from a different grape variety to the finished wine, for a more pleasant taste. If those 2% don’t grow in our vineyard, we are unlikely to count as producers of our wine (Erzeuger).
Or, go back to Who’s this.