Using vegetable oils to produce biodiesel is commonly carried out around the world. Most techniques rely on sophisticated production methods that aren't appropriate for rural, underdeveloped regions. This presents a challenge since these regions don't have access to modern manufacturing processes. Tropical regions such as Cameroon are rich in biological resources. Most villages have limited electricity or industrial resources so a lowtech appropriate technology (AT) based approach is required. This project focuses on solving a key challenge in the production of biodiesel - removing the soap produced as a side product of the transesterification reaction - in a simple and cost effective method. Evaluation of locally available resources for different wash additives with varying pH was conducted to yield the optimal washing process.