Fermentation is a natural metabolic process of controlling yeast, bacteria, and mould to modify food, and produce the required product. It is a process through which, the bacteria convert carbohydrate (such as sugar or starch) into an acid or alcohol; for example, yeast performs fermentation to gain energy by transforming sugar into alcohol. Beer, yogurt, wine, and other food products, such as dosa, cheese, beer, bread, miso, olives, yoghurt, idli and others are produced through the process of fermentation. Fermentation ingredients are required for the process of fermentation of food products.