Criminal conspiracy to steal used cooking oil shows how trash can become treasure
A restaurant owner looks at a tank for collecting used cooking oil. Steve Pfost/Newsday RM via Getty Images Federal prosecutors recently described an interstate criminal enterprise with all the trappings of organized crime: clandestine warehouses, money laundering and stolen goods transported across state lines .
In September 2026, U.S. federal prosecutors uncovered a large-scale criminal operation involving 19 defendants across 10 states. The group stole used cooking oil from restaurants by siphoning it from collection tanks and transporting it to depots for resale. The motive was financial: used cooking oil can be refined into biodiesel, a renewable fuel. This case highlights how materials once considered waste can become valuable enough to drive illegal activity. The operation included clandestine warehouses, money laundering, and cross-state transportation, resembling organized crime structures. Two defendants pleaded guilty, while the remaining 17 are scheduled for trial in April 2027.
The article explains that waste is not a physical property but a human classification. Historians, anthropologists, and geographers note that what is considered waste depends on technologies, markets, laws, and cultural norms. For example, used cooking oil was once discarded but is now valuable for biodiesel production. This idea is central to the field of discard studies, which examines how societies define and manage unwanted materials. Industrialization increased the scale of waste by concentrating residues in factories, creating new disposal challenges and opportunities for repurposing.
In nature, nothing is truly wasted. Fallen trees decompose, providing nutrients for fungi and insects, while animal feces nourish other organisms. These processes are part of natural cycles where one organism’s leftovers sustain another. Human societies, however, often remove unwanted materials from circulation. The article contrasts natural cycles with human waste systems, where materials like used cooking oil or whey are discarded based on human decisions rather than their physical properties. This distinction underscores how waste is shaped by cultural and economic factors.
Industrialization created new forms of waste, such as whey (a liquid byproduct of cheesemaking) and fly ash (a residue from coal combustion). Historically, whey was dumped into waterways, causing pollution, but in the 1970s, ultrafiltration technology allowed it to be processed into whey powder, lactose, and protein concentrates for food and animal feed. Similarly, fly ash was once stored in landfills, but in the 1930s, engineers discovered it could replace part of the Portland cement used in concrete, reducing waste and energy use. These examples show how industrial byproducts can be repurposed into valuable materials.
In the 19th century, cottonseed was considered a nuisance and dumped into waterways, creating foul-smelling masses. However, manufacturers later found ways to process it into cottonseed oil, which was used in soap, cooking, and as a substitute for animal fats. By the late 19th century, cottonseed oil became the foundation of a major industry. Yet, its transformation also introduced new problems. In the early 20th century, hydrogenation—a process that turns liquid oils into semisolid fats—was used to create vegetable shortening like Crisco. However, partially hydrogenated oils were later linked to health risks, including cardiovascular disease. This case illustrates how repurposing waste can solve one problem while creating another.
Wastewater treatment produces nutrient-rich biosolids, which can be spread on farmland to return nitrogen and phosphorus to soils. This practice recycles nutrients and reduces the need for synthetic fertilizers. However, sewage sludge also contains contaminants, such as PFAS (perfluoroalkyl and polyfluoroalkyl substances), a group of chemicals known as “forever chemicals” due to their persistence in the environment. PFAS are linked to potential health risks, raising concerns that recycling sludge as fertilizer may also spread pollutants. This dilemma highlights the complexities of turning waste into resources.
Used cooking oil is often refined into biodiesel, a renewable fuel. Government policies, such as financial incentives for clean fuel, have increased demand for used cooking oil, sometimes making its price higher than that of newly produced vegetable oils. This creates an incentive for fraud, such as mixing cheaper virgin oil into used cooking oil or mislabeling virgin oil as waste. Regulators and researchers have raised concerns about deceptive practices in the international used cooking oil market. The article notes that while repurposing waste can solve disposal problems, it can also introduce new economic and environmental challenges.
The theft of used cooking oil demonstrates that the value of a material is not inherent but determined by human decisions. The physical properties of the oil did not change when thieves began stealing it; only its status and economic value shifted. This paradox reflects the broader history of waste, where materials classified as disposable can become valuable commodities. However, assigning a price to waste does not eliminate its environmental and social costs. Sometimes, repurposing waste solves disposal issues, while other times, it merely transfers the problem elsewhere. The case of used cooking oil illustrates how the politics of waste—who decides its value and who benefits—remain central to its management.
