They are a natural food grown on fortified beet molasses under carefully controlled conditions with the addition of yeast treated with ultra-violet light in order to naturally increase its vitamin D content. Product info DirectionsDelicious sprinkled on pasta, soups, salads, stews, casseroles and breakfast cereals to enhance their flavour. You can even mix it into smoothies or fruit and vegetable juices. If cooking, heat below 100?C to preserve vitamin value. Ingredients Dried inactive yeast, vitamin D yeast (both of the genus Saccharomyces cerevisiae, entirely free from Candida albicans yeast).