Future Meat Technologies has a proprietary technology for growing fibroblast cells inside of bioreactor systems. Fibroblasts are connective tissue cells (like those found underneath the skin) that grow rapidly and can be differentiated into fat or muscle cells without any genetic modification or foreign genetic material added. The fat and muscle cells are then grown in a bioreactor using animal free cell culture medium that Future Meat has developed and patented. The company has also developed a process for cleaning toxic waste (a major challenge involved in producing cell based meat) and recycling the medium to improve efficiency and reduce costs. This proprietary cleaning process is similar to a water filtration system that contains solid particles that bind to the toxic waste molecules (mostly ammonia) and filters them out of the bioreactor.