The system that comprises all life on earth is circular. The western predominant linear approach has however lead to an accelerating and devastating imbalance in our ecosystem and our soils have been depleted to the extent that we are dependent on mined nutrients in order to grow nutritious food. Our human waste, that contain these exact nutrients, is flushed out in water systems making them eutrophied. This design proposal explores the possibility to close the circle by harvesting the nutrients from human urine and return them to the field. With a filtering unit I call the harvester, connected to a separating toilet, users of the service Åker gets to provide the farmers they buy vegetables from with human fertiliser. Farmers get support from a research team to transition into a more sustainable agriculture.