July 13th is National French Fry day, and that makes us hungry…but it also makes us think of renewable fuels. Why you ask? Well, the used cooking oil (UCO) that these popular (and all too crave-able) morsels are fried in is actually vital to the renewable fuel and biomass-based diesel industries. Renderers pick up UCO from restaurants and much of it (along with rendered animal fat) is used to produce sustainable biomass-based diesel – namely