Justification/Motivation In recent years, parallel to the growth of the organic sector, we witnessed an increasing interest in alternative ways to guarantee the integrity and authenticity of organic food. Although the mainstream approach to organic certification is useful for consumers to provide a guarantee about production processes and food quality, it is less accessible to small-scale producers and the poorest consumers especially in developing countries. Groups of smallholders worldwide started implementing alternative approaches to cope with problems associated with third-party certification. These practices are known as Participatory Guarantee Systems (PGS). The Participatory Guarantee is based on International Organic Standards issu...