If visiting from Cologne how do we reach the Haribo factory please?
Do you want to go to the outlet store?
Yes. I believe this to be bigger than the store in the centre?
From: Köln Hbf
To: Bonn-Plittersdorf, Wurzerstr.
and tick the box local transport.
The best way is to take an RE 5 train from Cologne to Bonn-Bad Godesberg. Once there go down to the metro and take any city-bound metro to Wurzerstr. From there it‘s only a short work to the factory outlet store. (Check Google Maps).
The store is quite big, they also offer products that you don‘t usually see in regular stores.