A worker prepares mash potatoes in school canteens central kitchen on June 1, 2021, in Rillieux-la-Pape, north of Lyon. - The 5.000 m2 central kitchen prepares, 48 hours in advance, approximately 28,000 meals served every day in Lyon's 129 school canteens, where they are delivered by truck. Menus that are "100% organic and 50% local": this is the objective stated by the green municipality that took over Lyon a year ago. (Photo by JEAN-PHILIPPE KSIAZEK / AFP)