Remove shells from castor beans and let it sun dry for at least 8 hours to a day.

After sun drying, roast seed on low or 200 degrees for at least 2 hours or until beans are completely dry.

Grind or blend seeds and add it to a pot full of boiling hot water.

Boil for at least 4 hours or until the water has evaporated and the oil rises to the top. Skim oil off and pour it into separate container. Let oil cool in a cool and dark environment to protect the quality of the oil.