Abstract
Although it is the most widely accepted form of organic guarantee, third party certification can be inaccessible for small-scale producers and promotes a highly market-oriented vision of organics. By contrast, participatory guarantee systems are based on principles of relationship-building, mutual learning, trust, context-specificity, local control, diversity, and collective action. This paper uses the case study of the Mexican Network of Local Organic Markets to explore how PGS can be used to support a more alternative vision of organics, grounded in the notion of food sovereignty. It presents some of the key challenges and opportunities associated with the approach, and highlights its potential to serve as a locally-based institution for collective action, thereby offering some structural support to alternative agri-food initiatives.