Once we eat the bread that we like, we only see its appearance and not exactly the way how it is prepared. The taste of the bread depends on how well it is being prepared and as well as the various ingredients being used.The foundation of bread is the dough. It serves as the basis. The dough is made using a combination of flour and water. Using the right proportions of these two ingredients, it can create dough kneaded to its perfection with the right texture and exact consistency of its crumbs. Aside from the common dough itself, there is such a thing called as the sourdough. The sour taste of the sourdough is due to the leaven. A leaven is an agent that causes fermentation which is a process wherein yeast enzymes act upon to produce the sour taste. There is a bacteria called as lactobacillus found in the yeast. And this feeds on the end products of the fermentation process thus excreting lactic acid responsible for the sour taste.The traditional approach of making sourdough is based on that process. Families do bake before on a regular basis. The piece of a dough used to make bread this week is saved so as to be used the following week. The production of the sourdough has been done like that until the recent times. New alternatives already came up. One popular bread making ingredient nowadays is the Baker's Yeast. This contains strains of yeast that have been chosen and packed as one. The absence of lactobacillus will not make it sour. This has already been used by bakers all over the world. One more modern way is to use sourdough starters. The cultured lactobacillus and yeast is called sourdough starter. It is managed by continuously and regularly eliminating a part then refreshing it by adding water and fresh flour. These starters are made more accessible since many companies are already offering it. This is even now sold online.However bread is prepared lies in the hands of the baker. One may vary from the other because of the ingredients used or the ways of preparation as long as the important points are preserved and retained, then we still get to enjoy our favorite breads.