"The following is a cheap and easy 4 step method.
1 - Ask every place with a fryer near you if they want "free fryer grease removal." Then tell them to give it to you in the original jugs it came in. Do not accept anything but fryer oil - no water, no soap, and no grease-trap material. It should look like maple syrup. This will give you a lot of 4.5-gallon jugs filled with used fryer grease. Let them sit for at least two days and most of the large particles will settle out. A warm cube of WVO facilitates the settling of particles (food and water). A warm spot in the sun is great during decent weather, or in the winter you can simply place your cubes on an electric blanket for a few hours. [...]"