Petis is an important component in the city of Surabaya culinary. Dark colored food ingredients made from waste processing also have a big role on the culinary culture of the people of Surabaya because petis is present in a variety of special foods and also exists in the daily dining of the people of Surabaya. Many facts about petis and the stories behind the appearance are less interesting to be conveyed by the speakers from various perspectives in order to give an idea of how big the role of petis to culinary in the city of Surabaya.