Rujak petis is a traditional salad and a specialty of Ponorogo, East Java. This type of rujak is similar to rujak cingur, but it's meatless. The dish usually contains sliced mango, cucumbers, water spinach, jicama, kedondong (June plums), soybean sprouts, and tofu.
The ingredients are served in a dark sauce made from black fermented prawn paste called
petis (hence the name of the dish), palm sugar, shallots, salt, and ground or crushed peanuts. Although this salad was traditionally served on banana leaf plates in the past, nowadays it's served on standard plates, and it's often topped with fried shallots.