Just learned from a neighbor that unwanted meat scraps is used to create diesel or biodiesel. Can't recall which; either way, he said they're not selling drums

Just learned from a neighbor that unwanted meat scraps is used to create diesel or biodiesel. Can't recall which; either way, he said they're not selling drums above plant costs but have to keep the machines running for environmental compliance. Specifically, Crude Oil plants with less demand are switching to this.