A syrup of this density is filtered to remove sugar crystals and calcium malate.
The filtered syrup is placed in the target containers while hot (usually 82 degrees C or more). To sterilize the stopper, the containers are turned upside down.
"Parmigiano Reggiano" and "Parmesan" are Protected Designations of Origin (PDO) for cheese produced in these provinces under Italian and European law.
Outside the European Union, the name "Parmesan" can be legally used for similar cheeses. The designation "Parmigiano Reggiano" refers only to the original Italian cheese.