 This protection scheme requires that mozzarella sold in the European Union is produced according to a traditional recipe.The TSG certification does not specify the source of the milk, so any type of milk can be used, but it is speculated that it is normally made from whole milk.In Italy, mozzarella made from the milk of the Italian water buffalo is an important variety; the Italian "buffalo mozzarella" sold as "Mozzarella di Bufala Campana" is protected under the EU's Protected Designation of Origin scheme and may only be produced in select locations in the regions of Campania, Lazio, Apulia and Molise.