Fresh mozzarella is sold in different-sized balls or logs and is usually sold in or near the fresh deli section of the grocery store. Fresh mozzarella is usually packed in water and has a much higher moisture content than "regular" mozzarella. "Regular" mozzarella is usually sold in slices or shredded and is usually located in the cheese and lunchmeat aisle at the grocery store. Essentially, they are the same cheese but the fresh mozzarella has a much higher moisture content. "Regular" mozzarella cheese is drier, has a longer shelf life, and is great for melting on pizzas, sandwiches, or on top of pasta. Fresh mozzarella does not melt as well, which is why it's usually used in cold dishes versus hot dishes.