Mycoprotein is a protein-rich food derived from fungi, specifically from a type of filamentous fungus called Fusarium venenatum. It is commonly used as a meat substitute in various vegetarian and vegan products, providing a source of high-quality protein that is low in fat and high in fiber. The production of mycoprotein involves fermenting the fungus in a controlled environment, where it grows and multiplies. After fermentation, the mycoprotein is harvested, processed, and often shaped into products like Quorn, which is a popular brand that offers mycoprotein-based meat alternatives.