Pure sesame oil is derived from pressed sesame seeds and is an excellent source of polyunsaturated fats. This natural oil is ideal for cooking and is best used in moderation. Pure sesame oil is derived from pressed sesame seeds and is an excellent source of polyunsaturated fats. This natural oil is ideal for cooking and is best used in moderation. It has a low smoke point and should not be used for frying. A small amount of sesame oil adds a nutty flavor to dishes and can be used in place of butter or vegetable oil. Use in moderation for flavoring and dressings.