<![CDATA[Waste cooking oil (WCO) management in Tamansari Village, Wonorejo District, Pasuruan Regency, remains a concern due to improper disposal and limited community knowledge. A preliminary assessment of 50 households estimated that more than 166 L of WCO could be generated weekly. This program aimed to improve community knowledge, practical skills, and environmental awareness while establishing a digital WCO collection mechanism. The main novelty was the Mommy Jelantah application, integrating member identification, deposit-weight recording, quality grading, differentiated pricing, and automatic income estimation. WCO was classified into Grades A, B, and C based on clarity, color, and visible residues, with corresponding prices of IDR 7,000, IDR 4,500, and IDR 2,500 per kg. The program employed Participatory Action Research (PAR), involving 30 participants. Evaluation used pre- and post-test questionnaires, observation, and a four-point satisfaction questionnaire. Knowledge increased from 42% to 88%, skills from 25% to 86%, and environmental awareness from 38% to 90%. The results indicate that integrating practical training with digital collection can strengthen traceable WCO management and support circular economy practices.]]>
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