Real Mozzarella is made from buffalo's milk. There have been herds of buffalo in Campania in the region to the south and west of Naples since the second century AD, except for a brief spell during the war.
Buffalo-milk Mozzarella has a soft and springy texture with signs of leafing. The color is porcelain white and has a delicate aroma. It is well worth the extra time and cost of seeking it out.
Italian Mozzarella is usually produced and will be offered to you in 250 gram or 125 grams, almost oval-shaped balls and it is stored in bowls or in sealed bags of whey.
The texture of the young cheese is quite elastic and supple and can be sliced reasonably easily. As it ripens, it becomes rather softer. It also increases in flavor.