COVID-19 response: Soap making from plant oil

Using soap for hand washing is extremely important to help preventing the spreading of diseases like caused by COVID-19. When there is shortage of soap it can be made by households in rather simple ways with plant oil and lye as major ingredients.

Almost any oil can be used to make soap, in practice most oils used are: olive- and palm-oil, coconut-,  sunflower-, groundnut-, but also oils from neem, jatropha, castor, moringa, etc

Some sources are given.