A tagine is a cone-shaped cooking vessel used in Moroccan cuisine to prepare a slowly simmered stew. While the word tagine can refer to the clay or ceramic pot used to prepare the stew it can also refer to the stew itself. You don't need to own a fancy clay pot, however, to make this recipe. A large stockpot will work just fine. Not only is this tagine plant-based, but it is renal (kidney) diet friendly too. What does that mean? It is low in potassium, phosphorus and sodium,