Urban gardens are very diverse and provide many ecosystem services (local food, social link, biodiversity, rainwater collection...). Interest for these gardens is booming but question the access of these places for all. Besides this access, the co-benefits to precarious people resulting from the coupling of food production/processing is still lacking. We hypothesised that the association of self-production and collective food processing activities can lead to food sovereignty. To test this hypothesis, an action-research project called PAM “du Potager A la Marmite” / “from garden to cooking pot” was designed by the Laboratory - Soils, Knowledges, Savours (LAB3S) and the Urban Agriculture Chair. This action aims to promote and develop projects combining community gardens and community kitchens within the municipality of Bondy, located in the north of Paris metropolitan region. The project was carried out in collaboration with few local public and private partners to enhance the action anchoring. We present the method used to project co-construction with local partners as well as the first feedback from the field survey carried out during the gardening and food processing activities. Those findings could be useful on the one hand to replicate this action and on the other hand to identify the limit (city-dwellers’ mobilization, logistics) and the potentials (autonomy, spaces mutualization, collective learning) of action from the point of view of food sovereignty.