Profetas (Protein Foods, Environment, Technology and Society) is a Dutch trans-disciplinary research programme, aiming to develop more sustainable food systems. The central theme of the programme is the question: is a transition feasible from a diet based primarily on animal proteins to a diet based for a large part on new food products made from plant proteins? In the programme this question is studied from very different disciplinary perspectives. In the programme a consumer and chain oriented approach is adopted. In the experimental part of the programme, pea proteins are studied. Profetas is funded by the Netherlands Organisation for Scientific Research, with support from the Ministry of Agriculture, Nature management and Fisheries and the food industry. The programme compromises 16 PhD and post-doctoral projects.