A process and apparatus for assisting the extraction and processing of biodiesel oil from organic feedstock includes: providing crushed oil-bearing organic feedstock meal from which has been extracted a first amount of biodiesel oil wherein the meal retains a second amount of entrained oil; forming a meal slurry containing said meal and passing the slurry to an anaerobic digester; anaerobically digesting the meal slurry so as to convert said second amount of entrained oil to produce heat, methane gas, and organic fertilizer or oil-free cattle feed; providing an electrical generator and employing the methane gas for at least the production of electricity by burning the methane gas in the electrical generator which is adapted to convert heat to electricity and re-cycling at least some of the electricity.