Being a development organization practicing BDD with Specflow for 3 years we wanted to get even better at it. Gaspar held three days of great workshops addressing advanced topics on how to effectively elaborate needs expressed as user stories to specifications as well as the inner workings of SpecFlow and how to automate and govern test code. To take these workshops to improve its practices is certainly something I would recommend an organization that has been practicing BDD with SpecFlow for a while to do.
