The average amount of fuel oil consumed in Indonesia increases by 6% annually but reserves and output decline by 10% annually. By 2025 and 2050, the government wants renewable energy to account for at least 23% and 31% of total energy consumption, respectively. A renewable energy source that can be created through fermentation, distillation, and dehydration is ethanol (C2H5OH). This procedure shows how important it is for people to learn how to find alternative energy sources. An essential component in the creation of ethanol is cassava, namely Manihot esculenta. This study aims to examine the process of creating bioethanol and to ascertain its ethanol content, density, pH, yield, and octane rating when blended with petroleum-based fuel. It also examines the yield and density of the bioethanol produced by the method. The experimental approach is used. The method of data analysis used in this study is descriptive research, which entails summarizing or explaining the collected data in its whole without the goal of generalizing or conclusions. According to the ethanol test results, there was 89.31% of ethanol present, 0.7705 g/mL of density, and a pH of 7.624. The yield from fermentation is 75.74%, the yield from distillation is 4.96%, and the yield of bioethanol per kilogram is 0.0103 L/kg.