The way we deal with leftover food has come a long way. For most of human history, food scraps were simply a non-issue—they were tossed out the back door or fed to the pigs. But as societies grew and urbanized, the "solution" of dumping waste in a hole became a serious problem of sanitation, space, and sustainability. The history of waste management, specifically regarding food, is a fascinating journey from primitive disposal to sophisticated resource recovery. https://www.hdoutdoorfacilities.com/products/waste-management-equipment/kitchen-waste-treatment-equipment