This document summarizes the history of cooking oil fortification with vitamin A in Indonesia, including key challenges and progress over time. It describes early feasibility studies showing the program's potential impact in reducing vitamin A deficiency. While standards were established in 2012, implementation was repeatedly postponed due to lobbying by some oil companies. By 2019, consensus was reached to fortify all packaged cooking oils by January 2020. However, leadership changes risk further delays to this effort to combat widespread nutritional problems through a low-cost fortification strategy.