The EU Horizon 2020 project “RECIPES” has published its final policy brief. A team from the Institute for Advanced Sustainability Studies (IASS) led by Pia-Johanna Schweizer was involved in the project and examined how participatory approaches can support the application of the precautionary principle. This issue is explored in depth in a chapter of the project’s report “Guidance on the application of the precautionary principle in the EU”.