In a world which is struggling with the goals of reducing the amount of greenhouse gases which our lifestyle in the West is currently creating, every individual effort for change is importance. This is a cause, which is very near to the hearts of young people. Many young people nowadays want to live a more sustainable life and strive to become more aware about the origins of products they consume. They want to know how the production of such products affects the environment, how their own consumption habits can be adjusted. The project "Welcome to the chocolate factory! - A discovery in historical ecology" includes one youth exchange in Germany in 2021 that is hosted by Mostar Friedensprojekt e.V. This project is based on our past experiences working on topics of food consumption intensively as well as on discriminatory structures and racisms. In these past experiences we always touched the connection, but never fully explored it. This we wanted to do now with this exchange, by letting the participating youth discover everything that is there to know about chocolate in relation to a sustainable life. But they would also go together on a discovery through history, research of the historical trade routes of chocolate and how this luxury good became a common commodity all over the world. They would reflect critically on colonialism and the social costs connected to it until the very day in terms of poverty and inequality in the world. Especially, participants will learn to calculate the „Food-Print“ of chocolate. Together they would research the different ingredients reaching from cacao to sugar, fats, milk powder, ... energy, water, land AND child labour. During the exchange we would also make our own chocolate and try to understand how fair trade works, why the producers of cocoa in the Third World cannot make ends meet. With the selection of partners from Estonia, France, Malta, the Netherlands, Turkey, UK and Germany we had a composition of countries and organisations that can connect to the topic and bring European and World Wide perspectives to the discussion. In the end of the exchange we wanted to achieve to have young people that are more aware of the connections between social and environmental issues and are more aware of the sustainable development goals and the history behind such efforts. The partners have been selected based on their profile and suitability to the project topic. There are countries involved that had colonists and some that only profited from it as the whole Western World did. With some of the partners we have a long history of working together and also participated in their projects as partners. Some partners are new but included because of their contribution to the topic. Together the proposal was discussed and build. All partners had expertise in organising youth exchanges and could provide their group with an experienced group leader who would also be able to lead the whole group through the programme. To intensify cooperation with these organisations was an objective.