Lhe donut descends on the city. And this is not the fat and sweet donut, but the new theory that is all the rage in the circles of ecological and social transition and the unorthodox economy. After American cities and Amsterdam, Brussels also wants to apply the principle of the donut to its public management. We are not yet to bend all policies to this new approach, more respectful of the environment and people and clearly the opposite of the search for growth, but a first inspiration.