Nutritional yeast is a deactivated yeast product commonly used as a seasoning or flavoring agent, especially in vegan and vegetarian cuisine. It has a savory, cheese-like flavor and is rich in various essential nutrients, including B vitamins, protein, and minerals. As a food additive, nutritional yeast is typically produced from a species of yeast known as Saccharomyces cerevisiae, which is grown on a nutrient-rich medium, such as molasses or sugarcane. After the yeast is harvested, it is deactivated through a heating process, washed, and dried to create the final flaky or powdered form. This versatile ingredient is often sprinkled on dishes such as salads, soups, and popcorn to enhance their flavor profile while also providing a nutritious boost.