Biodiesel feedstocks are renewable resources used to make biodiesel, a fuel that's similar to petro-diesel. The raw materials such as Vegetable Oils, UCO ( Used cooking Oil ,Algae and other Non-Edible Oils etc.) used to produce biodiesel through transesterification. The choice of feedstock affects fuel quality, production cost, and sustainability. Below are the main categories of biodiesel feedstocks: