Ensuring a sustainable food supply appears to be a collective challenge that links several territorial functionalities and includes a wide range of stakes: human health, environment and social issues. The food supply of cities hence is analyzed through the prism of territorial design. It crosses two perspectives: (i) the feedbacks from both a researcher and a collective catering operating actor about urban farming projects in Toulouse metropolitan area, set as examples to nourish the workshop’s thoughts, (ii) the collective brainwork of a group of diverse researchers and actors that were gathered for the 2017-Pradel French Agronomists Association Symposium. The four components of territory design allowed us to enlighten the raising synergies: link between operations and territory, sharing of every actor’s outlooks, commitment of everyone and innovations publicity. These are prerequisites to the transition toward a sustainable food supply that relies on the junction between various dynamics. This cross grid drives our thinking for a local food supply from both cities and territories, and opens up a new horizon. Finally, territory design’s answers to territory development matters as far as it raises the unnoticeable users’ endeavors, in their practical dimension and bound to a common wanted and politically-backed future. It is thus a collective learning loop centered on experimentation.