Its the beginning stages of learning to brew the stuff. Once I can do this quite simply, I will step it up with 4 2-liter system and agitator.
After that then I need to scope out waste vegetable oil sources and develop a good filtration system.
Eventually, a full fledged bio-diesel still will be put in place where I can make it in 50 gallon batches. Most bio-dieselers are making there own brew for about .60 cents a gallon. To me that is near free energy.