The core of the concept is the development of a 'basic tool' for written interviews with milk producers. The tool was jointly developed by the Institute of Farm Economics, the agency 'Land und Markt' and the working party 'Sustainable milk production' of the 'Regional Association of the Milk Industry in Lower Saxony' (LVN). The participating parties jointly defined ecological, animal welfare, social and economic sustainability issues to include in the interviews and developed indicators to measure them. With the subsequent survey of 750 milk producers a data base was created that serves for further branch-wide discussions.
The final report has been published as Thünen Working Paper 28 (in German version).