Meat substitute boom could help environment "Some children cannot eat certain kinds of fish for religious reasons," said Sabine von Oppeln, a political researcher at Berlin's Free University and an expert on all things French. She told DW that food "has been a hotly debated issue in France for a while." Macron appealing to voters Several years ago, Germany's Greens similarly advocated introducing a vegetarian day once per week in school cafeterias, primarily for environmental reasons. But Mayor Doucet has said he was not motivated by such considerations in Lyon. His move is designed to speed up school lunch breaks during the pandemic. Doucet has said that going from a range of optional dishes to a fixed menu is the only way schoolchildren can eat lunch in an appropriate amount of time, especially now that kids must observe physical distancing rules. Fewer options in the lunch line means less time spent mingling with other students.