One of the alternatives to the ingredients used in making homemade biodiesel is Biodiesel Tallow.  So instead of vegetable oil, we can make us of beef. Actually, we only need a new batch of these ingredients when we first start making biodiesel but as soon as we get it running, we can use used oil such as the used oil from restaurants that they will no longer need anymore.  By using this oil, we have actually recycled something that is about to be thrown away.  So the benefits are really insurmountable as we are using garbage to produce fuel.