Ghormeh Sabzi is a slow-cooked stew that requires a significant amount of cooking time to allow the flavors to meld together. Typically, the dish takes around 2 to 3 hours to cook on low heat. The longer cooking time helps tenderize the meat and allows the herbs and spices to infuse the stew with their rich flavors. It is recommended to simmer the stew until the meat is tender and the flavors have developed to their fullest.