Parmigiano Reggiano

Parmigiano Reggiano is the foundational cheese of Italy. It is a hard, granular cow's-milk cheese produced exclusively in a strictly defined geographic zone that includes the provinces of Parma, Reggio Emilia, Modena, and parts of Bologna and Mantua. While the term "parmesan" is often used loosely on international supermarket shelves, true Parmigiano Reggiano is a protected designation of origin (DOP) product. It is a dense, crystalline, and savory cheese that serves as the backbone of the culinary identity of Emilia-Romagna.

What it is

Parmigiano Reggiano is a long-aged cheese made from raw cow's milk, sea salt, and calf rennet. It contains no additives or preservatives. Its physical character is defined by its granular texture—the result of a long aging process that allows amino acid crystals to form. These crystals provide the cheese's signature crunch and concentrated umami profile. The cheese is produced in massive wheels, typically weighing about 40 kilograms. A minimum aging period of 12 months is legally required, though most examples found in high-quality shops have been aged for 24, 36, or even 48 months.

Origin and history

The history of Parmigiano Reggiano is tied to the Benedictine and Cistercian monasteries of the Middle Ages. In the marshy plains between Parma and Reggio Emilia, monks reclaimed land to create pastures for cattle. The surplus milk from these cows needed to be preserved, leading to the development of a large, cooked, hard cheese. Over the centuries, the methods remained remarkably stable. Today, the Consorzio del Formaggio Parmigiano Reggiano maintains strict oversight, ensuring that the milk comes only from cows fed on local forage and that the traditional production steps remain unchanged.

How it’s made

The production cycle begins with a mixture of skimmed evening milk and whole morning milk. This is poured into large, bell-shaped copper vats. The cheesemaker adds calf rennet and a natural whey starter, causing the milk to curdle. The curd is broken into tiny granules and cooked at a specific temperature. Once the curd settles at the bottom of the vat, it is lifted out in a cloth and placed into a mold. After a few days, the wheels are submerged in a brine bath for several weeks.

The aging takes place in humidity-controlled warehouses. At the 12-month mark, an official inspector from the Consorzio examines every wheel by tapping it with a small hammer. The inspector listens for hollow sounds that would indicate internal defects. Wheels that pass the rigorous physical and sensory tests are heat-branded with the Consorzio’s seal; those that do not are declassified.

Where to eat it

The best way to experience Parmigiano Reggiano is to visit a caseificio (dairy) in the heart of the production zone. Visiting a producer near Parma or Reggio Emilia allows a traveler to see the early morning production process, where the steam rises from the copper vats. Many of these producers have attached shops where you can purchase wheels or wedges aged to different specifications. If you are dining in restaurants in the region, the cheese will almost always appear as a primo course, shaved over tagliatelle al ragù or tortellini in brodo, or served as a standalone course at the end of a meal.

When and how

Parmigiano Reggiano is available year-round. When serving it, allow the cheese to come to room temperature for at least 30 minutes before eating to fully release its aroma. Rather than slicing it with a knife, use a traditional almond-shaped knife to pry chunks from the wheel, preserving the texture and the crystalline structure. A 24-month cheese is standard for cooking or grating; a 36-month or 48-month wheel is intended to be eaten in shards as a snack or a dessert course.

What to drink with it

Because of the cheese's saltiness and density, it requires a beverage with enough structure or acidity to provide balance. In Emilia-Romagna, the classic pairing is a glass of sparkling Lambrusco. The acidity and bubbles of this dry, local red wine act as a palate cleanser against the richness of the fat. For those preferring a still wine, a medium-bodied Sangiovese from the nearby hills of Romagna works well. Outside of wine, a few drops of Aceto Balsamico Tradizionale—the aged balsamic vinegar from neighboring Modena—poured directly over a chunk of 36-month Parmigiano is the most traditional way to consume it.