This invention relates to a process for making mozzarella cheese using lactic acid as the acidifying agent. Mozzarella cheese is currently acidified with either vinegar or citric acid. Either of these ingredients add undesirable taste. Mozzarella cheese made with vinegar or citric acid has a shelf life of about 25 days. In order to supply fresh mozzarella cheese to supermarkets across the country, a shelf life of at least 30 days is highly advantageous. Lactic acid provides the fresh mozzarella with a natural taste, smooth texture and significantly longer shelf life.