Mycoprotein, commonly known by the brand name Quorn, is a protein-rich food source derived from a fungus called Fusarium venenatum. Produced through a fermentation process similar to that used in brewing, mycoprotein starts as a culture of the fungus, which is then fed with a nutrient solution in large fermenters. As the fungus grows, it forms fibrous structures, creating a meat-like texture. Once harvested, the mycoprotein is processed into various forms such as nuggets, patties, and strips, providing an alternative to meat in many dishes.