The Raden Rahmat Sunan Ampel Islamic Boarding School located 2.1 km from Jember University on Jalan Koptu Berlian with students totaling approximately 70 the of Jember, State Polytechnic and Muhammadiyah Jember. One boarding schools' efforts is to produce cassava’s rengginang. problems faced by partners include nutritional content cassava rengginang that has not been analyzed, innovative potent...