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Scientists Just Made A Cookie Out of Recycled Plastic 'Slurry'. Welcome to 2026
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Scientists at Southern Illinois University Carbondale have created an edible cookie made from recycled plastic, a development that could revolutionize food production in extreme environments. The cookies, named µBites (pronounced "microbites"), are the result of a process originally researched for NASA's Deep Space Food Challenge and were recently presented at an American Chemical Society symposium. The innovation aims to address both plastic waste management and food scarcity, turning a ubiquitous pollutant into a potential nutritional resource.
The research team, led by microbiologist Lahiru Jayakody, has developed a multi-step process to convert plastic into food. It begins with a method called oxidative hydrothermal dissolution, which uses oxygen, water, intense heat, and high pressure to break down plastics like polyethylene terephthalate (PET) and agricultural waste into a liquid carbon feedstock. This feedstock is then fed to cultured yeast, which is engineered to produce nutritious food slurries.
To enhance the nutritional profile and appeal of the final product, the team has engineered different yeast strains to synthesize essential food ingredients. These include proteins, lipids, vitamins, aromas, and flavorings such as vanillin for a vanilla scent and beta-carotene for color and vitamin A content. The ingredients are combined into a dough, 3D-printed into a consistent shape, and then microwaved to form a hard cookie.
While the concept may initially seem unappetizing, the researchers emphasize the rigorous processing involved. They state that comprehensive analysis by accredited laboratories has confirmed the µBites are free from toxic chemicals, heavy metals, allergens, and food pathogens. Safety is a primary concern, and simulated digestive studies are currently underway in preparation for potential human trials.
The implications of this technology are significant, particularly for space exploration and disaster relief. Jayakody envisions the µBites system as a portable, tunable device that could be deployed in submarines, disaster relief vehicles, or even on Mars to produce on-demand food from carbon waste. This could provide a sustainable solution for feeding people in remote, harsh, or resource-scarce environments where traditional agriculture is impossible.
Currently, the cookies have not yet been tasted by humans. However, blind sensory tests indicate that the product has a pleasing texture and an appealing smell. The next major step will be completing all necessary safety and efficacy analyses before moving to human consumption trials. The success of this research could mark a pivotal step toward a circular economy, where plastic waste is not just discarded but transformed into a vital resource for human survival.
