This is a continually developing project (or perhaps process) for groups to use in exploring the meaning of "sustainability". The goal is to enlist participants in a thoughtful, playful analysis of the concept that focuses on how components of specific meals are more or less sustainable. Groups put forward ideas for meal planning in specific contexts, and are then encouraged to explore new angles by which the question can be taken up. Variously conceived as a "hackathon", a simulation game, or a collaborative research jam, these activities reveal sustainability to be not a static target but a set of values, or even an ongoing social process, connected to a web or personal, social, economic, environmental, and political decisions and structures.