Protected Designation of Origin · Complete Guide

What is Parmigiano
Reggiano PDO?

Characteristics, PDO regulations, map of the five provinces
and aging stages: the complete guide to the king of Italian cheeses.

The King of Cheeses · PDO since 1996

What is Parmigiano
Reggiano?

Parmigiano Reggiano PDO is a hard, cooked-curd cheese produced exclusively from raw cow's milk, natural rennet and salt. No additives, no preservatives: just milk, time and artisan knowledge.

Each wheel weighs between 38 and 45 kg and requires approximately 550 litres of milk. The PDO regulations impose strict standards: production limited to five provinces in Emilia-Romagna, cows fed on local forages, artisan processing within 24 hours of milking, and a minimum ageing of 12 months.

550L milk per wheel
40kg average wheel weight
12+ months min. aging
0 additives or preservatives
PDO Protected Designation
of Origin — EU 1996
Protected Designation of Origin
The zone · 5 provinces

A defined zone.
A guaranteed origin.

Only cheese produced in these five provinces, under the rules of the Production Specification, may bear the Parmigiano Reggiano PDO mark.

  • Parma — from the Food Valley to the Apennine hills
  • Reggio Emilia — cradle of the first Benedictine abbeys
  • Modena — fertile plain, thousand-year dairy tradition
  • Bologna — only west of the Reno stream
  • Mantova — only south of the Po river
PDO protection since 1996: the European Union recognises Parmigiano Reggiano as a Protected Designation of Origin. The specification governs every aspect — no exceptions permitted.
Parmigiano Reggiano Parmigiano Reggiano Consortium
Map of the PDO production area: Parma, Reggio Emilia, Modena, Bologna (west of Reno), Mantova (south of Po)

Bologna only west of the Reno · Mantova only south of the Po

Protected Designation of Origin
What it is · Identity and value

More Than
Just a Cheese

Parmigiano Reggiano is much more than a food product. It is the result of a territory, a precise method and a tradition handed down through the centuries.

By law, only cheese produced according to a rigorous specification — which governs every stage from the milk to the ageing — may be called Parmigiano Reggiano. Everything else is imitation.

PDO protection since 1996: Parmigiano Reggiano is recognised as a Protected Designation of Origin by the European Union. The specification regulates every aspect of production — no exceptions are permitted.
Official Parmigiano Reggiano logo PDO Mark
PDO Zone · 5 provinces
What it is · Exclusive origin

Where It
Truly Comes From

The real Parmigiano Reggiano is born only here: in the provinces of Parma, Reggio Emilia, Modena and in limited areas of Bologna and Mantova, where the bond between land, farming and cheesemaking is an integral part of the product itself.

This unique balance makes it impossible to replicate elsewhere in the same way. Visiting a dairy means seeing this bond with your own eyes.

Short, certified supply chain: milk must come from farms within the PDO zone, fed on natural forages. Silage maize and any additives are explicitly prohibited by the specification.
Zero additives
What it is · Three ingredients

Only Essential
Ingredients

Parmigiano Reggiano is made with just three ingredients:

  • raw cow's milk
  • animal rennet from calf
  • salt

No preservatives, no additives, no industrial processing. An apparent simplicity that demands absolute control at every stage.

Prohibited by the specification: additives, preservatives, non-animal enzymes, colourings and any treatment that alters the natural characteristics of the milk. Parmigiano Reggiano is one of the "cleanest" cheeses in the world.
Artisan craftsmanship
What it is · The method

Still an Artisan
Process

Every day, at dairies like Ferrarini & Bonetti, the milk is processed fresh, without interruption. The transformation takes place:

  • in copper vats
  • with natural whey starter
  • through manual gestures handed down over time

This is not industrial production: it is a process guided by the cheesemaker's experience. And this is exactly what you can see in person by visiting the dairy.

Copper vats: copper ensures even heat distribution and promotes the natural development of lactic acid bacteria. A choice that is both technical and artisan — unchanged for centuries.
Minimum 12 months
What it is · Ageing

Time Makes
the Difference

Parmigiano Reggiano is not made in a few days. The minimum ageing is 12 months, but many wheels mature for 24, 36 months or more, developing increasingly complex aromas.

During this time: the structure becomes granular, the flavour intensifies, the characteristics that make it unique emerge. Time is not a step: it is an ingredient.

Tyrosine crystals: the longer the ageing, the more the characteristic white granules appear in the paste. They are not salt: they are free amino acids — the sign of deep maturation and a paste meant to be savoured slowly.
PDO fire brand
What it is · The guarantee

A Real
Certification

Every wheel is checked individually. Only those that meet all requirements receive the Parmigiano Reggiano fire brand — a guarantee of authenticity and quality.

It is this brand that distinguishes the real product from any imitation. Without it, it is not Parmigiano Reggiano.

Individual tapping test: every wheel is assessed at 12 months by Consortium experts using a steel hammer. The sound reveals the internal structure. Wheels that do not pass are downgraded and the rind abraded.
Parmigiano Reggiano Consortium PDO Mark
Guided tour
What it is · A direct experience

An Experience to Live,
Not Just to Read About

Truly understanding what Parmigiano Reggiano is means seeing it come to life. Entering a dairy, watching the cheesemaker at work, breathing in the ageing warehouse: these are experiences no description can replace.

At Caseificio Ferrarini & Bonetti you can experience this process up close.

Guided tours by appointment: every morning, during milk processing, you can follow every production step in person. One hour that is worth more than a thousand words.
Book a Guided Tour