- Sesame oil, rice bran oil, and palm oil are widely used as edible oils in various cuisines around the world. - Castor oil is known for its medicinal properties (primarily as a laxative) and industrial uses. - Castor beans contain ricin, a toxic substance, which is removed during processing to produce castor oil. However, the oil itself has a distinct composition (rich in ricinoleic acid) that makes it unsuitable for regular culinary use compared to other vegetable oils.