"Humanity wastes more than a billion meals a day." So stated the United Nations Environment Programme (UNEP) on March 27, 2024, on the occasion of the publication of the latest Food Waste Index report. Each inhabitant of the planet wastes an average of 79 kg of food, which represents around 1 billion tonnes of food waste. In Quebec,  the total amount of food waste produced annually is over 3 million tonnes, equivalent to 1 kg per person per day. What can be done about it? A CIRANO study offers insights into the key success factors for implementing initiatives to reduce food loss and waste.