Each batch of nutritional yeast is grown on a mixture of cane and beet molasses for a period of seven days. B-vitamins are added during the process to provide the yeast with the nutrients it needs to grow. When harvested, the yeast is washed, pasteurized, and dried on roller drum dryers before it is ready for market. It is then used by food manufacturers in food products, added to boost the nutrient levels in pet foods, and simply packaged for sale in natural foods stores.